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Q.

The average of 8 numbers is 21. If each of the numbers is mulitiplied by 8, the average of the new  set of numbers is :

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a

8

b

168

c

29

d

21

answer is D.

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Detailed Solution

Average of 8 members is 21. If each number is multiplied by 8 then the average will

also get eight times.

Therefore average is 21 × 8 = 168

So, option ‘D’ is 168 correct answer.

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The average of 8 numbers is 21. If each of the numbers is mulitiplied by 8, the average of the new  set of numbers is :