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Which of the following numbers will replace the question mark (?) in the given series: 124, 129, 136, 145, 156, ?

A168

B169

C172

D165

Answer:

B. 169

Read Explanation:

adding 5,7,9,11,13 124+5=129 129+7=136 136+9=145 145+11=156 156+13=169


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