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Q.

The average of  25 numbers is 26. If two numbers 20, 21 are discarded, then the average of the.remaining numbers is nearly

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a

25

b

none

c

26.4 

d

23.2

answer is B.

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Detailed Solution

Total sum of  25 numbers =(25×26)-(20×21)

=650−41=609

∴  Average=60923=26.4

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