The greatest number of four digits which is divisible by 12, 20, 36 and 60 is:	Choose the correct answer
A) 9000 B) 9900 C) 9500 D) 9800 E) 9700
Greatest number of 4-digits is 9999.   L.C.M. of 12, 20, 36 and 60 is 180.   On dividing 9999 by 180, the remainder is 99.   Required number  (9999 - 99)= 
<gadget id="calculator"> (9999 - 99)</gadget>
<output>9_900</output>
9900.   Answer: Option 9900
<result>B</result>
The greatest number of four digits which is divisible by 12, 20, 36 and 60 is: