Latest TCS Aptitude Question SOLUTION: Inspired By Fibonacci Series Sangeet Decided To Create His Own Series Which Is 1, 2, 3, 7, 7, 22, 15, 67, 31, _, 63? A) 202 B) 31 C) 76 D) 49

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Inspired By Fibonacci Series Sangeet Decided To Create His

Own Series Which Is 1, 2, 3, 7, 7, 22, 15, 67, 31, _, 63?

A) 202 B) 31 C) 76 D) 49

Asked In TCS priyank (12 years ago)

Unsolved Read Solution (4)

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Siva Kumar  (12 years ago)

This Series Question has 2 alternative series in it,
1,3,7,15,31 --> 1,3-1=2,7-3=4,15-7=8,31-15=16,63-31=32
similarly for the next series,2,7,22,67 -->2,7-2=5,22-7=15,67-22=45,x-67=(45x3);
Here,5,15,45 are in G.p with r = 3,solving for x,we get,

=> x = 202,option A.

Is this solution Helpfull? Yes (17) | No (1)  

sumit gupta  (12 years ago)

here are 2 series
1 series:1,3,7,15,31,63
1*2+1=3
3*2+1=7
7*2+1=15
15*2+1=31
2 series:2,7,22,67,....
2*3+1=7
7*3+1=22
22*3+1=67
67*3+1=202
202 is correct answer

Is this solution Helpfull? Yes (16) | No (1)  

kaykash  (12 years ago)

two r present 1,3,7,15 the format is (n*2)+1 nd other series is
2,7,22,67,_ is (n*3)=1
2*3+1=7
7*3+1,22*3+1 nd 67*3+1=202 is ans

Is this solution Helpfull? Yes (6) | No (1)  

arun  (7 years ago)

A) 202
here alternative digits have a relationship between them....

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