Question

a. p. 5,11,17,........is305?

Answer 1

pls ask properly what we have to find

Answer 2

An = a + (n-1) d
305 = 5 + (n-1) 6
305 -5 = (n-1) 6
300/6= n-1
50 = n-1
51 = n

I hope it's helpful