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1 vote

Directions: What should come in place of the question mark (?) in the following number series. 5, 8, 21, 75, ?

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

5, 8, 21, 75, ?
1). 347.5
2). 337.5
3). 339.75
4). 339.5


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1 answers

2 vote
Answered by on | Votes 2 |

The pattern of the given series:

⇒ 5 × 1.5 + 0.5 = 8

⇒ 8 × 2.5 + 1 = 21

⇒ 21 × 3.5 + 1.5 = 75

⇒ 75 × 4.5 + 2 = 339.5 =?

∴ The missing number of the series = 339.5

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