Question

The meaan of 1, 2, 3,......, n is 8n/15, then the value of n is ___________​

Answer 1

Answer:

Here as the denominator is 15

then the number of observations are 15

1,2,3,.........15

1+2+3+4+5+6+7+8+9+10+11+12+13+14+15/15=8n/15

15 cancels on both sides

1+2+3....+15=8n

120=8n

n=120/8

n=15

therefore n=15

hope this helps you