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Choose the number which can replace the question mark (?) in the series given below. 51, 44, 49, 42, 47, 40, 45, 38 ,?
Question

Choose the number which can replace the question mark (?) in the series given below.
51, 44, 49, 42, 47, 40, 45, 38 ,?

A.

31

B.

33

C.

43

D.

45

Correct option is C

Given:
51, 44, 49, 42, 47, 40, 45, 38 ,?
Logic: Each number alternates between subtracting 7 and adding 5.
51 - 7 = 44
44 + 5 = 49
49 - 7 = 42
42 + 5 = 47
47 - 7 = 40
40 + 5 = 45 
45 - 7 = 38
38 + 5 = 43
So, 43 is next term.
Thus, the correct answer is (c).

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