Find the largest number of four digits which is exactly divisible by 27,18,16,15  Choose the correct choice from the following answers.
A) 8600
B) 8610
C) 8620
D) 8630
E) 8640
Explanation:   LCM of 27-18-16-15 is 2160.   After dividing 9999 by 2160 we get 1359 remainder.   So answer will be 9999-1359= 
<gadget id="calculator">9999-1359</gadget>
<output>8_640</output>
8640   Option 8640
<result>E</result>
Find the largest number of four digits which is exactly divisible by 27,18,16,15