Question

find the sum of first ten multiply of 5

Answer 1

Answer:

Hi❤

Step-by-step explanation:

Sum of the first ten multiples of 5

5+10+15+.....+50

5(1+2+3+...…+10)

1+2+3+4+5+6+7+8+9+10=

$\large\frac{10×(10+1)}{2}$

=5×11=55

∴ Sum of the first ten multiples of 5 is 5×55=275.

Answer 2

1) 15

2) 30

3) 45

4) 60

5) 75

6) 90

7) 105

8) 120

9) 135

10) 150

Total sum

275