Madhya Pradesh Police Exam Model Paper 2

Question : 7 of 100

Marks: +1, -0

Complete the series choosing the missing number:
1, 9, 25, ______, 81, 121

Solution:

Given,
1, 9, 25, ______, 81, 121
The pattern followed here is,

1^2 = 1, 3^2 = 9, 5^2 = 25,

$7^2 = 49$ ,

9^2 = 81, 11^2 = 121

We see the series is the square of consecutive odd numbers.
Hence, the correct answer is 49.

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