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Q.

Find the number that comes next in the pattern 21, 42, 84, 168, ________.

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a

346

b

336

c

333

d

326

answer is C.

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Detailed Solution

The pattern starts by adding the given number to itself.

21 + 21 = 42
42 + 42 = 84
84 + 84 = 168
 

So, the next number in the pattern is 168 + 168 = 336

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