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QUESTION
Q
What will come in place of question mark (?) in the following number series: 13, 27, 55, 97, 153, (?)

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

13, 27, 55, 97, 153, (?)

A

243

B

265

C

223

D

215

E

236

A

243

B

265

C

223

D

215

E

236

Solution

The pattern of the number series is: 13 + (7 × 2) = 27 27 + (7 × 4) = 55 55 +...

The pattern of the number series is:

13 + (7 × 2) = 27

27 + (7 × 4) = 55

55 + (7 × 6) = 97

97 + (7 × 8) = 153

153 + (7 × 10) = 243

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