What is the greatest 4 digit number which is exactly divisible by 12, 18, 21 and 28?
A9900
B9828
C9800
D9200
Answer:
B. 9828
Read Explanation:
The largest four digit number = 9999
LCM( 12, 18, 21 and 28) = 252
9999 = 252 × 39 + 171
So the greatest 4 digit number which is exactly divisible by 12, 18, 21 and 28
= 9999 - 171
= 9828
