Find the sum of all 2 digit numbers divisible by 3. Pick:	A) 99	B) 199	C) 1665	D) 2452	E) 2547
All 2 digit numbers divisible by 3 are :   12, 51, 18, 21, ..., 99.   This is an A.P. with a = 12 and d = 3.   Let it contain n terms. Then,   12 + (n - 1) x 3 = 99 or n = 30.   Required sum = 30 x (12+99) = 1665.   ANSWER 1665 1665
<result>C</result>
Find the sum of all 2 digit numbers divisible by 3.