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GATE | GATE CS 2018 | Question 1

What is the missing number in the following sequence?
2, 12, 60, 240, 720, 1440, …. 0

(A) 2880
(B) 1440
(C) 720
(D) 0

Answer: (B)
Explanation: The series starts with 2.



We multiply first term with 6 to get second term 12

Then we multiply second term with 5 to get third term 60



Then we multiply third term with 4 to get fourth term 340

Then we multiply fourth term with 3 to get fifth term 720

Then we multiply fifth term with 2 to get fifth term 1440.

Then we need to multiply with 1 and we get 1440 again.

Quiz of this Question

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GATE
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