Explanation:

- The series given is: 47, 51, 57, 65, 69, 76, 83

- Notice the pattern: starting from the first number, 47.

- Add 4 to the next ? 47 + 4 = 51.

- Then, add 6 to the next ? 51 + 6 = 57.

- Add 8 to the next ? 57 + 8 = 65.

- Add 4 to the next ? 65 + 4 = 69.

- Add 6 to the next ? 69 + 6 = 75. (Here it should be 75 instead of 76)

- Finally, add 8 to the last number to maintain this cyclic pattern: 75 + 8 = 83.

The pattern repeats with +4, +6, +8, and so on.

- 76 does not follow the pattern, breaking the sequence.

- The correct number should be 75 instead of 76.

- 76 is the number that does not belong.