[0:00]Hello everyone, welcome to my channel. Toh aaj hum log solve karenge Brain Teasers ke questions ko aur iske pehle ke jo bhi videos hai na usme hum logo ne solve kar liya tha iske pehle ke saare worksheet ko.
[0:13]Aur wo saare videos ka link aapko mil jayega description box me ya to phir aap I button ko click kijiye, yaha se bhi aapko videos ka link mil jayega, okay. To chaliye hum log start kar lete hain aur yahan pe kya kehta hai first question. Tick the correct answer, okay. Hum logo ko yahan pe four options diya gaya hai, isme se ek option correct hai jisko humko tick out kar lena hai. First question kehta hai which of the following is meaningless? Yahan pe konsa hai jo meaningless hai jiska koi meaning nahi nikal raha hai, okay? Toh aaiye hum log check kar lete hain. Toh hum log yahan pe dekh lete hain ye first number pe, first number pe kya likha hua hai aap dekhiye, ye hai X L V I, okay? Toh aap jante hain na L kya represent karta hai? L represent karta hai 50. Hum log ye jaante hain, okay? Abhi dekhiye iske baai or kya likha hua hai, baai or kya likha hua hai X? X represent karta hai 10, toh isme baai or likha hua hai toh wo kya ho gaya, subtract ho gaya. Toh isme se ye 10 ko humne subtract kar liya, okay? Abhi aap dekhiye ye kitna humko mil jaata hai? Ye humko mil jaata hai 40. Phir aapke right side, aap dekhiye right side kya likha hua hai? Right side hum dekh rahe hain 6 likha hua hai. Ye kya represent karta hai? 6. Okay? Ye 5 aur uske saath 1 likha hua hai toh ye humko 6 represent karta hai. Toh abhi hum kya karenge na, 40 me phir hum 6 ko add kar lenge. Kyun? Chuki ye toh humko 40 represent kiya aur iske right side 5, 6 likha hua hai toh ye kya ho gaya hamara total 46 ho gaya. Toh iska meaning nikal raha hai, theek hai? Toh ye toh meaningless nahi hua. Abhi hum baat kar lete hain second number ki. Toh second number pe hamare paas kya hai? Ye dekhiyega. Yahan par hai hamare paas I C aur phir ye V, phir I I, okay? Toh yahan pe sabse bada value kon bata raha hai? C. Aur C hamara kya batata hai? 100, hum log ye jaante hain, okay? Toh abhi dekhiye iske left side kya likh deta hai na, 1 likh diya hai toh isme hum 1 minus kar lete hain toh kya hota hai? 99 hota hai. Theek hai? Phir iske baad yahan pe right side kya likha gaya hai? Yahan pe right side likha gaya hai 7. Kya likha gaya hai? 7. Toh aap yahan pe 99 me plus karenge 7 toh ye humko kya dega? 106 dega, okay? Toh ye is tarah se likha hua hai lekin ye meaningless nikal raha hai. Kyun meaningless nikal raha hai? Chuki agar humko 106 likhna hai toh hum is tarah se kyun likhenge? Hum seedha isko aise kyun na likhen? Hum yahan pe likhenge C aur iske saath hum lenge 6, ye dekhiye. Ye hamara ho jayega 106. Ye kitna ho jayega? 106 ho jayega. Kyun? Chuki aap dekhiye yahan pe aapko C kya represent kar raha hai? C represent karta hai 100. Theek hai? Aur iske saath humne kya liya hai? 6 liya hai. Toh hum plus kar lenge 6 toh humko 106 mil jayega. Toh 106 ko hum kaise represent karenge? Is tarah se represent karenge. Na ki hum is tarah se represent karenge, okay? Toh ye toh representation galat ho gaya. Theek hai? Toh isliye ye hamara second number ka jo hoga na wo meaningless hoga. Ye kya hoga hamara? Meaningless hoga. Toh hum yahan pe second number ko tick out kar lete hain, clear? Abhi second number, B number question dekhiye kehta hai the greatest 2-digit number exactly divisible by 17 is. Toh 17 ka humko table le lena hai, okay? Toh abhi aap dekhiye 17 ka table me sabse bada number konsa aata hai? Ye hamara hai 85 toh hum yahan pe 85 ko tick kar lenge. Next kehta hai the smallest 5-digit number formed by using the digits 3, 0, 1 (repetition of digits allowed) is. Toh yahan pe sabse uh humko smallest 5-digit number nikalna hai aur ye saare digit ko istemaal nikalna hai. Hamare paas digit kon kon se hain? Hamare paas hain 3, okay, 0, okay, aur 1. Ye saare digit ko le kar ke humko kya banana hai? Humko banana hai smallest, theek hai? Smallest. Toh ab dekhiye jab bhi smallest ki baat hoti hai toh hum log smallest number se start karte hain. Toh yahan pe sabse chhota number kya hai? 0. Toh agar aap 0 ko likhenge, 0 se starting karenge toh wo kisi bhi number ki pehle agar 0 aata hai toh uska meaning nahi hota hai. Jaise ki agar aap yahan pe 4 likhte hain aur iske baai or agar 0 likhte hain toh iska koi meaning nahi hota hai is 0 ka. Theek hai? Toh 0 ka tabhi meaning niklega jab wo pehla non-zero number ke right side ho, ye aap dhyaan rakhiyega. Non-zero number ke right side hoga tabhi 0 ka meaning hoga. Isliye yahan pe na hum 0 se starting nahi kar sakte hain. Humko yahan pe lena padega pehle 1. Toh hum jab 1 lete hain uske baad hum 0 ko yahan pe le sakte hain, okay? Toh hum yahan pe le liye hain 0. Phir hum le lenge 0. Abhi dekhiye hamare paas four digits ho chuke hain, okay? 1 2 3 4, humko 5 digits chahiye, okay? Toh yahan pe 3 ka bhi humko upyog karna padega. Toh 3 ka use karenge hum last me yahan pe 3 note kar dete hain. Toh ye jo hamara number aa gaya, ye kya ho gaya? Smallest 5-digit numbers, okay? Aur isme se 3 ka bhi humne use kar liya, 1 ka bhi use kar liya aur 0 ka bhi use kar liya. Toh ye hamara ho gaya sabse chhota number, ye saare digit ko le kar ke. Toh abhi hum tick kar lete hain kon sa option hamare paas hai yahan par. Yahan par dekhiye hamare paas kya hai na, first number option hai aur isko hum correct kar lenge, theek hai? Chuki ye dekhiye aapka 00013 likha hua hai, iska yahan pe 0 ka koi meaning nahi nikal raha hai. Chuki 0 kisi bhi non-digit, non-zero digit ke left side hota hai, starting me toh uska meaning nahi nikalta hai. Toh ye aapko 13 likha hua hai. Theek hai? Toh ye 2-digit ka hai, ye 5-digit ka number nahi hai. Ye toh 5-digit ka hai lekin ye 13000 ye bada ho gaya. Ye bhi 5-digit ka hai lekin ye bada number ho gaya. Theek hai? Toh is tarah se hamara kya hota hai? 10003. Ye 10013 likha hua hai. Toh sabse chhota number toh yahi ho gaya. Hai na? Ye 5-digit ka. Next hum dekhte hain D number. Kehta hai estimate uh the estimated value of this is. Iska kya value niklega? Toh aaiye hum log kar ke dekhte hain kya value nikalta hai. Toh yahan par hamare paas hai kya kya? Ye hai 36. Okay? Aur kya hai hamare paas? Plus me hai 71. Aur hamare paas kya hai? Minus me hai 55. Chaliye hum dekh lete hain kya hota hai. Toh abhi aap dekhiye hum iska kya value nikalenge? 36 ko hum kya note karenge? 36 ko hum round off karenge toh aap dekhiyega yahan pe 6 hai. Toh iske pehle jo digit hai isko hum badha lete hain. Toh isko hum round off kar ke kya likhenge? 40. Theek hai? Toh ye toh hamara ho gaya 40. Plus dekhiye, hamare paas hai 71. Toh 71 ko hum round off kya karenge? 70 karenge. Chuki iske pehle yahan pe 1 hai. Toh 1 hai toh hum 7 ko badhayenge nahi, 7 ko hum 7 hi rakhenge. Aur agla digit ke liye 0 rakhenge toh ye toh hamara 70 ho gaya. Minus abhi dekhiye 55 hai toh 55 ko aap kya likhiyega? Jab bhi 5 rehta hai toh aap kya karte hain uske pehle ke jo digit hai aap usko badha lete hain. Theek hai? Toh yahan pe aapne 5 ko 6 kar liya aur iske aage jo digit hai uske liye 0 rakh diya. Toh ye 60 me change ho jayega. Toh aap 60 me change ho gaya, ab aap kya karte hain? Ab aapko keval simply yahan pe solve kar dena hai. Toh dekhiye 40 aapka plus me hai, 70 aapka plus me hai. Dono ko aap add kijiye toh aapko kya milta hai? 110. Ab isme se 60 ko aap minus kijiye. Toh aap 60 ko minus kijiyega toh aapko kya mil jayega? Yahan pe aapko mil jayega 50, okay? Toh aapka answer kya ho gaya? 50. Toh kahan par hai 50? Aap dekh lijiye, ye aapka hai second number pe. Toh second number ko aap tick out kar lijiye, okay? Chaliye next dekhte hain kehta hai which of the following is not a natural number? Yahan pe kon sa hai jo natural number nahi hai? Toh hum log jaante hain ki natural number kya hota hai? Number starting from 1. Jo bhi number 1 se start hota hai, 1 ho gaya, 2 ho gaya, 3 ho gaya, okay? Is tarah se aage jo bhi number aayenge, ye sab ke sab kya hain hamare natural number hain. Aur agar isse koi chhota hota hai toh hamara natural number wo nahi kehlaata hai. Toh aaiye hum ek ek kar ke yahan pe solve kar lete hain, dekhte hain kiska value humko kya milta hai. Toh first me hamare paas hai 3 + 5 - 2. Toh abhi dekhiye 3 plus me hai aur 5 bhi plus me hai. Dono ko add kar liye toh 8 ho gaya. Minus me hum 2 kiye toh humko 6 mil gaya. Toh 6 hamara ek natural number ho gaya, okay? Lekin yahan pucha gaya hai ki is not a natural number, jo natural number nahi hai. Toh hamara option A toh nahi hoga. Chuki ye natural number ko bata raha hai. Abhi hum second number ko dekh lete hain, yahan pe hai 4 multiplied by 0. Hum jaante hain 0 ko kisi se bhi multiply karte hain toh kya aata hai? 0. Toh iska value kya aa gaya? 0. Ab dekhiye, 0 hamara natural number nahi hai. Kyun? Chuki natural number hamara 1 se start hota hai. Toh iska matlab ho gaya ki ye second number hai ye hamara answer hoga, chuki ye natural number ko represent nahi kar raha hai. Toh ye answer ho gaya. Ab ye bhi dekhiye 8 divided by 8 humko 1 dega. Toh 1 hamara kya ho gaya na? Ek natural number ho gaya. Theek hai? Isi tarah se yahan bhi aap dekhiye kya hai ye hamare paas? 6 minus 3 aur plus 1. Toh ye 6 yahan pe 7 minus 3, that is 4. 4 bhi hamara ek natural number hai. Toh hamara answer kya ho gaya? Second. Ab aate hain hum yahan pe question number B ki baat kar len. Kehta hai, answer the following questions. How many millions make 3 crores, okay? Kitne millions mil kar ke 3 crores banenge? Toh aaiye hum pehle yahan pe 3 crores ko note kar lete hain. Toh hum yahan pe likhenge B number, okay? B number me humko pehla ka answer chahiye. Toh humko likhna hai 3 crore. Humne yahan likh diya 3 crore. Okay? Ye lijiye.
[10:28]Ab 3 crores ko hum kaise likhenge? Ye dekhiye. 3 likhenge. Phir hum 0 denge, 0. Kitne 0 denge? 7 0 denge. Dekhiye humne yahan pe, ye ho gaya 5, 6 and 7. Ye 7 0 ho gaya. Aap isko counting kar sakte hain Indian system se. Right side se counting kijiye, ones, tens, hundred {comma} de dijiye, thousand, ten thousand {comma} de dijiye, lakh, ten lakh {comma} de dijiye aur ye ho gaya crore, phir ten crore. Toh 3 crore humne likh liya. Okay? Ab isi ko hum chahte hain international system me note karne ke liye. Toh aaiye international system me hum kaise note karte hain jara wo bhi dekh len hum log, okay? Toh ye ye jo ho gaya pehla three digit ye humko kya batata hai na? Ones batata hai.
[11:18]Aur dusra jo three digit ho gaya ye kya batata hai? Thousand batata raha hota hai. Okay? Thousand batata hai. Aur iske baad agla jo three digit hoga wo humko kya batayega? Agla jo humko batata hai wo million batata hai, ye hum log jaante hain. Theek hai? Toh aap dekh liye million ke place pe kitna aa gaya? Million pe hai yahan pe 30. Toh answer hamara kya ho gaya? 30 million, okay? Hamara answer kya ho gaya? 30 millions. Theek hai?
[12:02]Next, humne yahan pe dekh liya hai 30 million. Aaiye ab hum baat karte hain B number. Kehta hai which whole number does not have a successor? Kon sa whole number hai jiska successor nahi hai?
[12:15]Toh whole numbers jitne bhi hoyenge sabhi ka successor hoga. Toh ye question yahan pe thoda sa ulta ho gaya. Yahan pe likhna chahiye tha which whole number does not have a predecessor, okay? Toh isko aap yahan pe change kar lijiye. Successor ke jagah aap cancel kar ke yahan pe likhiye predecessor. Yahan pe aap likhenge predecessor, okay? Ye hoga. Toh which whole number does not have a predecessor? Toh iska answer hoga 0. Iska answer kya hoga? 0. Chuki 0 ek whole number hai jiska predecessor nahi hota. Predecessor kehne ka matlab ho gaya ki uske pehle koi bhi number nahi hoga jo ki whole number hoga. Chuki aap jaante ho ki whole numbers jo hote hain wo kahan se start hote hain? Whole numbers start hote hain 0 se, 1, 2, 3, 4, ye sab sab whole numbers hain. Toh jitne bhi whole numbers hain uska successor toh hoga hi. Successor matlab kya hota hai? Aapko pata hai. Successor matlab hota hai uske aage ka number, ek jodh dijiye. Toh aap dekhiye yahan pe successor nikalna chahte hain kisi bhi number ka toh aapko mil jayega. Aapko 0 ka successor chahiye toh 0 me aap 1 add kar lenge toh aapko kya mil jayega? 1. Toh 0 ka successor 1 ho gaya. Aapko 1 ka successor chahiye toh aapko 2 mil jayega. 2 ka successor chahiye toh 3 mil jayega. Okay? Is tarah se aapko sabhi ka successor mil jayega. Lekin yahan pe predecessor ki baat karte hain agar hum log toh kya hota hai? Ye dekhiye. Predecessor me aapka jitna bhi hai, sabhi ka predecessor milega. Agar hum 4 ki baat kare toh 4 ka predecessor kya hoga? 3 hoga. 3 ka predecessor kya hoga? 2 hoga. 2 ka kya hoga? 1 hoga. 1 ke liye 0. Magar 0 ke liye koi bhi nahi hai. 0 ke liye koi bhi nahi hai. Toh hamara yahan pe answer kya hoga? Which whole number does not have a predecessor? That is 0. Answer is 0. Next, abhi aap samajh gaye. Aage chaliye, what is the estimated value of this? Iska estimated value kya hoga? Ye humko nikalne hain. Toh chaliye yahan pe hum log estimate kar lete hain. Toh 786 hai aur yahan pe kya hai hamare paas? 1385 hai, okay? Hum iska abhi estimated kar lete hain ki kya iska hoga. Toh yahan pe hum log kya dekh rahe hain? Hamare paas kya hai na 786 hai. Toh isko hum round off kar lete hain. Ye hamare paas 786 hai. Hum chahte hain 100 place ke jo digit hain usko round off kare. Toh 100 place ke pehle kon sa digit hai right side me? Aap dekhiye 8. Toh hum 7 ko change kar lenge. 7 ko hum kya karenge? Ek se badha lenge toh 8 ho jayega.
[15:13]Ab iske baad hum yahan pe 0 0 put kar lenge jitne bhi digits hain uske liye. Toh yahan hamare paas kya ho gaya? 800. Multiply karte hain. Hamare paas dusra number hai wo hai 1385. Abhi hum kya karte hain? 100 place ke jo digit hai usko hum chahte hain ki round off kare. Toh iske right side kon sa digit hai? 8. 8 hai yaani 5 se zyada hai. Toh aapko 3 ko kya karna padega? Change karna padega. Toh 3 ko aap ek se badha lijiye aur 4 kar lijiye aur yahan pe aap 0 0 put kar lijiye aage jo do digit hain uske liye. Toh ye aapke paas kya ho gaya? 1400. Aap isko multiply kar lijiye, aapko kya mil jata hai? Multiply karne se aapko mil jayega 14 8 ja 112, okay? Aur yahan pe 4 0 aapko put karne honge. Toh ye hamara answer ho jayega.
[17:09]Toh aap dekhiye kitna ho gaya hamare paas answer? Ye ho gaya 1 lakh, okay? Toh hum yahan pe aise note kar lenge. Chaliye ye toh ho gaya D number. Next question dekhte hain hamare paas kya hai? Kehta hai what is the difference between the place value and face value of 8 in this number? Ye jo number hai isme place value aur face value ka kya difference hoga?
[17:36]Toh hum yahan pe note kar lete hain place value of 8. Toh 8 ka place value kaise nikaliega? Toh aap dekh lijiye yahan se 8 ko aap pehle note kar lijiye aur 8 ke right side kitne digit hain utne 0 aapko lagane hain. Toh yahan pe 8 hai uske baad kitne digit hain? Count kijiye. 1 2 3 4 5. Total 5 digit hain toh aap 5 0 yahan pe note kar lijiye, okay? Ye kya nikal gaya? Ye nikal gaya iska place value. Ab humko face value chahiye. Toh aap jante hain na kisi bhi number ka face value change nahi karta hai. Toh face value of 8, face value of 8 kya hoga? 8 hi ho jayega. Ab humko iska difference chahiye. Toh hum difference nikal lete hain. So, hum yahan pe likhte hain difference, kya likhte hain? Difference. Toh humne likh diya difference. Abhi difference len toh aapko aata hai na? Kaise difference nikalna hai? Toh hum log sabse pehle kya karte hain? Jis number ka difference lena hai, pehle toh aap usko yahan pe note kar lijiye. Ab ye hum yahan pe sabse last me note karte hain right side se. Ab difference lena chahenge. Toh abhi dekhiye 0 minus 8 toh hoga nahi. Toh aap yahan pe borrow karna chahenge. Toh borrow karna chahenge toh aage bhi 0 hai toh borrow hoga nahi. Toh aapko yahan se borrow karna padega, yahan 7 bach jayega. Phir yahan pe 10 hoga, phir yahan se borrow karenge toh 9, phir yahan bhi 9, yahan par bhi 9, yahan par aapka 10 aa jayega. Toh 10 minus 8 karenge toh 2 hoga aapke paas. Phir yahan pe koi bhi digit nahi hai toh aapka 9999 aur yahan pe 7 aapko mil jayega. Toh aapka answer kya aa jata hai? Ye dekh lijiye, aapka answer ho gaya 799999 and last me 2. Ye ho gaya aapka answer. Kitna hai aap usko dekh lijiye. Ye hamare paas hai 7 lakh 99 thousand 992. Okay? Ye hamara answer ho jata hai.
[24:39]Is tarah se humne yahan pe question number third ko solve kar liya. Toh aaj ki video lesson me bas yahi tak, okay? Next question ko hum next video lesson me solve karenge. So, I hope this video lesson is helpful for you. So, like this video and share with others and do some comments. Also, do subscribe my YouTube channel and hit the bell icon to get the notification of upcoming videos. Thanks for watching, have a glorious day ahead.
