Question

find the sun of first multiple of 3

Answer 1

first multiple is 3 .....then sum is also 3........and u don't say how many first multiple.............

Answer 2

how many multiples of 3...

correct ur question....
.
and put on the formula = Sn=n/2(2a+(n-1)d

hope its help uhh...

nd if u r satisfied mark my answer as brainliest....then u will also get 3 points...