Four bells commence tolling together and toll at intervals of 2, 4, 6, 8 seconds respectively. In 18 minutes, how many times do they toll together ?	Choose the correct choice from the following
A) 43	B) 44	C) 45	D) 46	E) 47
LCM of 2, 4, 6, 8 is 24.   So, after each 24 seconds, they would toll together.   Hence, in 18 minutes, they would toll 18*60 seconds / 24 seconds = 45 times   But then the question says they commence tolling together. So, they basically also toll at thebeginning(0second).   So, total tolls together = 45+1= 
<gadget id="calculator">45+1</gadget>
<output>46</output>
46   Answer 45
<result>C</result>
Four bells commence tolling together and toll at intervals of 2, 4, 6, 8 seconds respectively. In 18 minutes, how many times do they toll together ?