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Fill in the blank in the series: 1, 4, 9, 16, ___, 36

Competition practiceNumber Series

A50
B27
C25
D23

Step-by-Step Solution

The terms are perfect squares:

1^{2}, 2^{2}, 3^{2}, 4^{2}, 5^{2}, 6^{2}

. The missing term is

5^{2} = 25

.

Answer: C) 25

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