Multiple choice

Directions: Find the missing number in the following number series? 27, 54, 162, 648 ?, 19440

  1. 3274

  2. 3280

  3. 3240

  4. 3365

  5. 3384
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C Correct answer
Explanation

The terms in the series are obtained by multiplying the preceding term by consecutive integers starting from 2. Specifically, 27 * 2 = 54, 54 * 3 = 162, 162 * 4 = 648, 648 * 5 = 3240, and 3240 * 6 = 19440. Thus, the missing number is 3240.

AI explanation

The series follows a pattern where each term is multiplied by consecutively increasing integers: 2, 3, 4, 5 and 6. Multiplying 648 by 5 gives the missing number, which is 3240.

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