Delhi Police Constable 2014 Paper

Directions (Qs. No. 32 to 35):
What is the value of ‘X’ in each of the following series?

Question : 32 of 100

Marks: +1, -0

49, 121, 169, X

Solution:

49\;\;121\;\;169\;\;289

↓\;\;\;\;↓\;\;\;↓\;\;\;\;\;↓

7^2\;\;\;11^2\;\;\;13^2\;\;17^2

In the given series the value of X will be 289. These all are squares of prime numbers.

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