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ANANTA TUDU

· started a discussion

· 1 Months ago

Q.43 (Question: 88893.3 )


WHAT DOES BAR MEANS AND WHY YOU HAVE TAKEN 99 INSTEAD OF 100

Question:
DIRECTIONS: What will come in place of question mark (?) in the following question ? 
 = ?
Options:
A) 1
B) \(\cfrac{100}{99}\)
C) \(\cfrac{99}{100}\)
D) \(\cfrac{100}{33}\)
E)

None of these

Solution:

Ans: (b)  


alternate:

its recurring sign means it repeats.... 


0.63636363......and so on.. 


let x=0.636363....____(1) 

100x=63.6363..... ________(2) 

(2)-(1), 99x=63 so, x=63/99____(3) 

similarly, 0.373737...and son.. 

let y=0.373737.. so, y=37/99_____(4) 

Add (3) and (4), x+y=100/99

kanhaiya jha

· commented

· 1 Months ago

its recurring sign means it repeats....

0.63636363......and so on..

let x=0.636363....____(1)
100x=63.6363..... ________(2)
(2)-(1), 99x=63 so, x=63/99____(3)
similarly, 0.373737...and son..
let y=0.373737.. so, y=37/99_____(4)
Add (3) and (4), x+y=100/99
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