Find the 21th term of an arithmetic progression whose first term is 3 and the common difference is 5. Pick:
A) 100 B) 102 C) 103 D) 150 E) 46

Rationale: "n th term of a . p = a + ( n - 1 ) * d = 3 + ( 21 - 1 ) * 5 , = 3 + 100 = 103 . answer : c"
Answer: C