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Determine the next number: 145, 122, 101, 82, 65, ?

Competition practiceNumber Series

A50
B48
C49
D52

Step-by-Step Solution

The terms are

1 2^{2} + 1, 1 1^{2} + 1, 1 0^{2} + 1, 9^{2} + 1, 8^{2} + 1

, so next is

7^{2} + 1 = 50

.

Answer: A) 50

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