Asked in NUMS 2014 2014Moderate

3, 6, 18, 72, _

Correct answer: D. 360

  • A. 144
  • B. 216
  • C. 288
  • D. 360

Explanation

The pattern is: Times 2, Then times 3, Then times 4, So times 5 to get 360 From 3 to 6: Multiply by 2 (3×2=6)From 6 to 18: Multiply by 3 (6×3=18)From 18 to 72: Multiply by 4 (18×4=72)It appears that each number is obtained by multiplying the previous number by successive integers: 2, 3, 4, ...Therefore, the next number in the sequence should be obtained by multiplying 72 by 5:72×5=360

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Series questions use numbers, letters, symbols or combinations arranged according to a hidden pattern. You may need to identify repeated operations, alternating rules, alphabetical positions, differences, reversals and mixed sequences to find a missing term or predict the next one.

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