Question

write the multiples of 4 between 261473 and 261499

Answer 1

a=261476 an=261476 d=4 n=?
an=a+(n-1)d
261496=261476+(n-1)4
261496-261476=(n-1)4
20/4=(n-1)
5+1=n
6=n
hence the number if multiples between 261473 and 261499 are 6