Question

Find the multiples of 3 in between 1 to 500. With this find their sum​

Answer 1

Answer:

Step-by-step explanation:

3,6.........498

L=a+(n-1)d

498=3+(n+1)3

495=3n-3

498=3n

N=166

Now,n/2(a+l)

166/2(3+498)

83*501

41583 is the answer

Answer 2

3,6,9,12,15,18,21,24,27,30,33, 36, 39, 42, 45, 48, 51, 54, 57, 60

63,66,69,72,75,78,81,84,87,90,93,96,99,102,105,108,111,114,117,120,123,126,129,132,135,138,141,144,147,150..