how many 3 - digit numbers are divisible by 6 in all ?
Choose the correct choice
A) 149  B) 150  C) 151  D) 166  E) none

Rationale: solution required numbers are 102 , 018114 , . . . . 996 . this is an a . p with a = 102 , d = 6 . let the number of its terms be n . then a + ( n - 1 ) d ‹ = › 102 + ( n - 1 ) × 6 = 996 ‹ = › n = 150 . answer b
Answer: B