100+ Circle Puzzle Missing Number with Answers - 2

Ans: D

In this simple subtraction with repetition series, each number is repeated, then 3 is subtracted to give the next number, which is then repeated, and so on.

Ans: E

This is a simple subtraction with repetition series. It begins with 20, which is repeated, then 3 is subtracted, resulting in 17, which is repeated, and so on.

Ans: A

This is a subtraction series with repetition. Each number repeats itself and then decreases by 9.

Ans: B

This is an alternating addition series, with a random number, 21, interpolated as every third number. The addition series alternates between adding 3 and adding 4. The number 21 appears after each number arrived at by adding 3.

Ans: E

This is simple addition series adds 4 to each number to arrive at the next.