Question

99. Average of 7 number is 23.If we add lin first number,2 in
second number, 3 in third number we go forward like this
and add 7 in seventh number then what will be the average
of these new numbers:​

Answer 1

Answer:

Average =23+(1+2+3+4+5+6+7)/7

=23+4=27

Answer 2

The new Average is 27.

Step-by-step explanation:

Consider the provided information.

As we know: $\text{Average }=\frac{\text{Sum of terms}}{\text{Number of terms}}$

Average of 7 number is 23.

$23=\frac{\text{Sum of terms}}{7}$

$\text{Sum of terms}=161$

If we add 1 in first number, 2 in  second number, 3 in third number we go forward like this  and add 7 in seventh number then the new sum will be:

161+1+2+3+4+5+6+7=189

New Average is:

$\text{Average }=\frac{189}{7}$

$\text{Average }=27$

Hence, the new Average is 27.

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The mean of 10 observation is 15. If an observation 24 is deleted , find the mean of the remaining observation