Question

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

53 ? 55 49 57 47

A 51 Correct Answer Incorrect Answer
B 55 Correct Answer Incorrect Answer
C 47 Correct Answer Incorrect Answer
D 40 Correct Answer Incorrect Answer
E 38 Correct Answer Incorrect Answer

Solution

53 – 2 = 51 51 + 4 = 55 55 – 6 = 49 49 + 8 = 57 57 – 10 = 47

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