Latest TCS Aptitude Question SOLUTION: 1. 3, 22, 7, 45, 15, ?, 31 a) 91 b) 151 c) 90 d) 5

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(#M40007703) TCS question TCS 68 PATTERN Keep an EYE

1. 3, 22, 7, 45, 15, ?, 31 a) 91 b) 151 c) 90 d) 5

Asked In TCS venkatesh (12 years ago)

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Vignesh  (12 years ago)

a)91
Let the sequence will have two series.
1st series = 3,7,15,31
2nd series = 22,45,??
In this, 1st series increased like (4*1),(4*2),(4*3),(4*4).... .ie.,
3+ 4 = 7
7+ 8 = 15
15+16 = 31
2nd series increased like (23*1),(23*2),(23*3).....i.e.,
22+ 23 = 45
45+ 46 = 91
Finally, sequence like
3, 22, 7, 45, 15, 91, 31

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AVINASH  (12 years ago)

Ans: 91

the sequence have 2 series

3 7 15 31
3*2+1=7
7*2+1=15
15*2+1=31

similarly
22 45 ?

22*2+1=45
45*2+1=91

finally the sequence is

3,22,7,45,15,91,31

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