**Question:**

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

336, 168, 84, 42, 21, ?

**Option A):**

10.5**Option B):**

17**Option C):**

14.5**Option D):**

15

**Correct Answer is Option A):**

10.5

**Explanation:**

In the given series, previous element is divided by 2 to get the next element.

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