Find the least number which when divided by 12,24,36,42 leaves remainder 9,21,33,39 respectively.  Choose the correct choice from the following options:
A) 499 B) 501 C) 452 D) 365 E) 325
The difference of 12-9= 
<gadget id="calculator">12-9</gadget>
<output>3</output>
3 , 24-21= 3 , 36-33= 3 , 42-39 = 3   LCM of 12,24,36,42 = 504   Required number = 504 - 3= 
<gadget id="calculator">504 - 3</gadget>
<output>501</output>
501   Answer is 501
<result>B</result>
Find the least number which when divided by 12,24,36,42 leaves remainder 9,21,33,39 respectively.