Series Completion - Study Mode

[#66] One term in the number series is wrong. Find out the wrong term. 56, 58, 62, 70, 84, 118, 182
Correct Answer

(C) 84

Explanation

Solution: The correct pattern is + 2, + 4, + 8, + 16, + 32, + 64 i.e. + 2, + 2 2 , + 2 3 , + 2 4 , + 2 5 , + 2 6 . So, 84 is wrong and must be replaced by (70 + 16) i.e. 86.

[#67] One term in the number series is wrong. Find out the wrong term. 1, 5, 5, 9, 7, 11, 11, 15, 12, 17
Correct Answer

(B) 12

Explanation

Solution: The given sequence is a combination of two series: I. 1, 5, 7, 11, 12 and II. 5, 9, 11, 15, 17 The pattern in both I and II is + 4, + 2, + 4, + 2. So, 12 is wrong and must be replaced by (11 + 2) i.e. 13.

[#68] One term in the number series is wrong. Find out the wrong term. 25, 36, 49, 81, 121, 169, 225
Correct Answer

(A) 36

Explanation

Solution: The correct sequence is 5 2 , 7 2 , 9 2 , 11 2 , 13 2 , 15 2 . So, 36 is wrong.

[#69] Choose the missing terms out of the given alternatives. H, I, K, N, ?
Correct Answer

(C) R

Explanation

Solution:

[#70] Choose the missing terms out of the given alternatives. Z, S, W, O, T, K, Q, G, ?, ?
Correct Answer

(A) N, C

Explanation

Solution: The given sequence is a combination of two series: I. Z, W, T, Q, ? and II. S, O, k, G, ?