Question

dind how many intezers between 200 and 500 aredivisible by 8

Answer 1

1st number between 200 And 500 to be divisible by 8=208
2nd number be = 216
last number be 496
they are in AP
AP formed will be
208,216,224........488,496
a=208 d=8
a(n)=a+(n-1)d
496=208+(n-1)8
496-208=(n-1)8
288=(n-1)8
36=n-1
37=n