4, −8, 16, −32, 64

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RRB TC CC Exam (Bangalore) 2007 click here to view all questions

What will come in place of the question mark (?) in the following questions?
4, −8, 16, −32, 64, ?

A−192

B192

C−128

D128

Nithin K ? Nov 26 '2016 at 13:32

Answer is :  −128

Explanation:

Multiply previous number with -2 to get next number.

previous number: 64

on multiplying -2  =  64 * -2  

= -128

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Answer is :  −128 Explanation: Multiply previous number with -2 to get next number. previous number: 64 on multiplying -2  =  64 * -2   = -128 Nithin K ? answered Nov 26 '2016 at 13:32 All Comments

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