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GATE 2018 CS – Question 5

General Aptitude · Quantitative Aptitude: Arithmetic and Number Computation · 1 mark · Multiple choice

What is the missing number in the following sequence?

2, 12, 60, 240, 720, 1440, ________, 0

  1. 2880
  2. 1440
  3. 720
  4. 0

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Show answer and explanation

Correct answer: (B) 1440

Explanation

Each term is the previous times a decreasing factor $6,5,4,3,2$, and the next factor is $1$: $1440\times1=1440$, and then $\times0=0$.