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Question

Find out the wrong number in the following given series:

1 0.5 3 7.5 21.5 74.25

A 0.5 Correct Answer Incorrect Answer
B 7.5 Correct Answer Incorrect Answer
C 1 Correct Answer Incorrect Answer
D 74.25 Correct Answer Incorrect Answer
E 21.5 Correct Answer Incorrect Answer

Solution

1 × 1.5 – 1 = 0.5 0.5 × 2 + 2 = 3 2 × 2.5 – 1 = 6.5 6.5 × 3 + 2 = 21.5 21.5 × 3.5 – 1 = 74.25

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