Find the missing term: 1, 5, 14, 30, 55, ? MCQ with Answer and Explanation

Find the missing term: 1, 5, 14, 30, 55, ?
A. 91
B. 89
C. 85
D. 95
Answer: Option A
Solution (By JKSSB Mock Tests)
Differences are 4, 9, 16, 25, i.e., 2², 3², 4², 5²; next difference is 6²=36, so 55+36=91.

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Practice More Mental Reasoning Questions

Question #1
Statements: No fruit is a vegetable. All mangoes are fruits. Conclusions: I. No mango is a vegetable. II. Some vegetables are mangoes. III. Some fruits are mangoes. Which conclusions follow?
A. Only I
B. All
C. Only I and III
D. Only II and III

Correct Answer: Option C


Explanation:
Mangoes are fruits and no fruit is a vegetable, so no mango is a vegetable. Also, since all mangoes are fruits, some fruits are mangoes follows.

This question belongs to: Reasoning Mental Reasoning
Question #2
Complete the series: Z, X, U, Q, L, ?
A. G
B. H
C. F
D. E

Correct Answer: Option C


Explanation:
Differences: −2, −3, −4, −5, −6. L−6=F.

This question belongs to: Reasoning Mental Reasoning
Question #3
Find the missing term: 2, 5, 10, 17, 26, ?
A. 35
B. 36
C. 39
D. 37

Correct Answer: Option D


Explanation:
The terms follow n²+1: 1²+1=2, 2²+1=5, 3²+1=10, 4²+1=17, 5²+1=26, so next is 6²+1=37.

This question belongs to: Reasoning Mental Reasoning