Question

the mean of first n natural numbers is 5n/9 find n

Answer 1

Answer:

n = 5/9

Step-by-step explanation:

so we know that the first naturl number is 1 .

therfore

mean = 1

5n/9 = 1

5n = 9

which implies n = 5/9

Answer 2

Answer:

IF 5N÷9 THEN

5×9 =N

45=N

N=45 AND 5N =225

SO,225÷9=25

5N ÷ 9 = 25