Find the largest number of four digits which is exactly divisible by 27,18,12,21
Choices: A) 9700 B) 9710 C) 9828 D) 9830 E) 9740
Explanation:   LCM of 27-18-12-21 is 756.   After dividing 9999 by 756 we get 171 remainder.   So answer will be 9999-171= 
<gadget id="calculator">9999-171</gadget>
<output>9_828</output>
9828   Option 9828
<result>C</result>
Find the largest number of four digits which is exactly divisible by 27,18,12,21