Instructions

What should come in place of question mark (?) in the following number series ?

Question 171

36, 20, ?, 8, 6, 5

Solution

The pattern here followed is :

$$\frac{36}{2} + 2$$ = 20

$$\frac{20}{2} + 2$$ = 12

$$\frac{12}{2} + 2$$ = 8

$$\frac{8}{2} + 2$$ = 6

$$\frac{6}{2} + 2$$ = 5

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