Question

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

1, 1, 1.5, 3, 7.5 , ?

A 26.5 Correct Answer Incorrect Answer
B 26.8 Correct Answer Incorrect Answer
C 21.5 Correct Answer Incorrect Answer
D 22.5 Correct Answer Incorrect Answer
E None of these Correct Answer Incorrect Answer

Solution

1 x 1 = 1 1 x 1.5 = 1.5 1.5 x 2 = 3 3 x 2.5 = 7.5 7.5 x 3 = 22.5

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