Question

Find the smallest positive number in the A. P. 500, 493, 486, 479,...​

Answer 1

d = -7

a = 500

n = ?

a + (n-1)d>0

500 + (n-1)-7>0

n-1>500/7

n >71.42+1

n>72.42

as n is smallest possible positive whole number

n = 73