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SSC CGL Tier 2 Exam 25 Oct 2015 Paper 1

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Question : 1

Total: 100

QUANTITATIVE ABILITIES

Average of n numbers is a. The first number is increased by 2, second one is increased by 4, the third one is increased by 8 and so on. The average of the new numbers is

a+
2n−1−1
n
a+2
2n−1
n
a+
2n−1
n
a+
2n−1
n

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