Math, asked by RajbirDatta, 6 months ago

The mean of five numbers a, a + 3, a + 6, a + 9, a + 12 is 9. Find the mean of first three

numbers

Answers

Answered by amithalwai77

2

Mean=(a+a+3+a+6+a+9+a+12)/5=9
5a=15
a=3
So number is 3, 6,9,12,15

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