11.

Number Puzzles Questions and Answers

A. 4
 B. 7
C. 9
 D. 11
Answer and Explanation
Answer: : 4

Explanation: :

Working in columns, the sum of the numbers in each column is always 14.




12.

Number Puzzles Questions and Answers
A. 7
 B. 9
C. 6
 D. 1
Answer and Explanation
Answer: : 6

Explanation: :

The numbers in each row and column add up to 15.




13.

Number Puzzles Questions and Answers
A. 44
 B. 40
C. 31
 D. 21
Answer and Explanation
Answer: : 40

Explanation: :

Moving from left to right, numbers increase by 2,3,4 and 5.




14.

Number Puzzles Questions and Answers
A. 9
 B. 34
C. 21
 D. 11
Answer and Explanation
Answer: : 9

Explanation: :

In each square of the diagram, the sum of the numbers is always 22.




15.

Number Puzzles Questions and Answers
A. 12
 B. 16
C. 23
 D. 34
Answer and Explanation
Answer: : 16

Explanation: :

Moving clockwise, around alternate segments in the chain, one sequence decreases by 1, 2, 3 and 4 each time, while the other increases by 2, 3, 4 and 5.