Question

find the number of factors of 4200 which are multiples of 6

Answer 1

6,12,18,.......4200
hence this is in AP which first term 6 and common difference 6
now use
tn=a+(n-1) d
4200=6+(n-1) 6
4194/6=n-1
n-1=699
n=700
hence 700 factors of 4200 which are multiple of 6

Answer 2

Answer:

6,12,18,.......4200

hence this is in AP which first term 6 and common difference 6

now use

tn=a+(n-1) d

4200=6+(n-1) 6

4194/6=n-1

n-1=699

n=700

hence 700 factors of 4200 which are multiple of 6