How many zeroes are there at the end of the number N, if N = 70! + 140! ? Choose the correct option.
A) 8	B) 12	C) 16	D) 20	E) 24
The number of zeroes at the end of 70! will be less than the number of zeroes at the end of 140!   Hence it is sufficient to calculate the number of zeroes at the end of 70!   The number of zeroes = [70/5] + [70/25] + [70/125] = 14 + 2 + 0= 
<gadget id="calculator">14 + 2 + 0</gadget>
<output>16</output>
16   The answer is 16.
<result>C</result>
How many zeroes are there at the end of the number N, if N = 70! + 140! ?