101.

Number Puzzles Questions and Answers

A. 8
B. 6
C. 4
D. 2
Answer: : 4

Explanation: :

In each row of the diagram, the sum of the left and right hand digits, minus the central digit is always 8.





102.

Number Puzzles Questions and Answers

A. 11
B. 15
C. 8
D. 7
Answer: : 8

Explanation: :

Divide the circle, horizontally and vertically, to give 4 quarters.

The sum of the numbers in the segments of each quarter equals 11.





103.

Number Puzzles Questions and Answers

A. 8
B. 3
C. 1
D. 6
Answer: : 6

Explanation: :

Working through the diagram in rows, and reading each row as a whole number, the diagram represents a subtraction sum : 203 - 7 = 196





104.

Number Puzzles Questions and Answers

A. 56
B. 45
C. 39
D. 33
Answer: : 39

Explanation: :

Moving from left to right, add 6 to the first number to get the next one along, then 8, 10 and 12 to complete the sequence.





105.

Number Puzzles Questions and Answers

A. 12
B. 9
C. 16
D. 7
Answer: : 16

Explanation: :

Starting with the top left number, and working down one row at a time, alternating between left and right, double the number each time.

Repeat this sequence, starting with the top right number.