The smallest number when increased by " 1 " is exactly divisible by 12, 18, 24, 32 and 40 is:  Choices
A) 1439
B) 1440
C) 1459
D) 1449
E) 1549
LCM = 1440   1440 - 1= 
<gadget id="calculator">1440 - 1</gadget>
<output>1_439</output>
1439   1439NSWER:1439
<result>A</result>
The smallest number when increased by " 1 " is exactly divisible by 12, 18, 24, 32 and 40 is: