A student was asked to calculate the average of first 15 natural numbers.He mistakenly
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sum of first 15 natural no. /15 is the avg of it.
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15/15
=240/15
16.
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questions to pura likha kr pagal....
A/c to ur question.....
Avg. of 1st 15 natural no. = (sum of first 15 natural no. )/Total no.
{n(n+1)/2}/n
= (n+1)/2
= (15+1)/2
=16/2
= 8☺️☺️
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