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Quantitative Aptitude

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Sequence and Series

Question
15 out of 30
 

Find out missing number.


2/3, 4/7, ?, 11/21, 16/31



A 5/9
B 6/11
C 7/13
D 9/17
E None of these

Ans. C Numerator & Denominator
2 + 2 = 4 & 3 + 4 = 7 so 4/7
4 + 3 = 7 & 7 + 6 = 13 so 7/13
7 + 4 = 11 & 13 + 8 = 21 so 11/21
11 + 5 = 16 & 21 + 10 = 31 so 16/31
increment in numerator is increasing by 1 every time like 2,3,4,5
Increment in denominator is increasing by 2 every time like 4,6,8,10
So, the missing term is 7/13.

Sequence and Series Flashcard List

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