100+ Circle Puzzle Missing Number with Answers - 1

Ans: 24

Each number equals the sum of the two numbers above it.

Ans: 24

Square the numbers 1, 2, 3, 4 and 5 and subtract 1.

Ans: 2

For each circle multiply the top two numbers together to give a 2 digit value, written in the bottom segments.

Ans: 6

The centre figure is the product of the left and right numbers, minus 1.

Ans: 4

Working in rows, the central value equals the sum of the squares of the left and right hand numbers.