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In the following question, select the mi...

In the following question, select the missing number from the given series : 7, 19, 42, 87, ?

A

136

B

176

C

172

D

216

Text Solution

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The correct Answer is:
B
7 x 2 + 5 =19
19 x 2 + 4 = 42
42 x 2 + 3 = 87
87 x 2 + 2 = 176.
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