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Complete the series. 1, 4, _ , 16, 25

A8

B6

C9

D12

Answer:

C. 9

Read Explanation:

The series is:

1, 4, _, 16, 25

Notice the pattern of perfect squares:

  • (1 = 1^2)

  • (4 = 2^2)

  • (? = 3^2 = 9)

  • (16 = 4^2)

  • (25 = 5^2)

So the missing term is:

9

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