Instructions

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

Question 52

12 ? 168 504 1260 2520

Solution

The pattern followed is,
$$12\times4 = 48$$.
$$48\times3.5 = 168$$.
$$168\times3 = 504$$.
$$504\times2.5 = 1260$$.
$$126\times2 = 2520$$.
Hence, Option D is correct.


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