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  1. 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 :
    1. 21
    2. 29
    3. 8
    4. 168
Correct Option: D

Here , The average of 8 numbers = 21
When each number is multiplied by 8, the new average gets multiplied by 8.
So , New average = 21 × 8 = 168


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