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What will come in place of the question mark (?) in the following number series? 3240, 540, 108, 27, ?, 4.5

7
10
9
8

Correct Answer: 9

Explanation:

Ans.
540 = 3240/6
108 = 540/5
27 = 108/4
? = 27/3, i.e. ? = 9

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