**Puzzle:** In the sequence 7, 5, 8, 4, 9, 3, ? what number should replace the question mark?

##### Show me Answer

**Correct Answer : 10**

7 minus 2 is 5.

5 plus 3 is 8.

8 minus 4 is 4.

4 plus 5 is 9.

9 minus 6 is 3.

So the logical choice, being that the mathematical function switches between addition and subtraction, while the integer increases by 1,