Question

How many zeroes are there at the end of the followin product?

1 X 5 X10 X 15 X 20 X 25 X 30 X 35 X 40 X 45 x 50 x 55 x 60 ​

Answer 1

1 * 5 = 5

5*10=50 ,

50*15=750 ,

750*20=15000 ,

15000*25=375000 ,

375000*30=11250000 ,

11250000*35=393750000 ,

393750000*40=15750000000 ,

15750000000*45=708750000000 ,

708750000000*50=3543750000000

3543750000000 * 55 = 194906250000000

194906250000000 * 60 = 11694375000000000

my ans is

zeros are 9