Search found 2 matches
answer is D. The number of trailing zeroes depends on the highest factor of 5 in that factorial. so the sequence for highest factor(hf) of 5 between the range of factorials is as follows:' from 0 to 5!= highest factor of 5= 1 5! to 10! hf(5)=2 10! to 15! =3 15! to 20! =4 20! to 25!=6 (here in 25 we ...
- by rohan_patel
Mon Apr 01, 2013 10:35 pm- Forum: Problem Solving
- Topic: Trailiiiiiing zer0s
- Replies: 21
- Views: 12035
when a train crosses the platform it has length of platform and it's own length to cover so,
length of train + length of platform= 72 *(5/18) *30 meters--eqn(1)
length of train(when he crosses a man its only its length)
length of train= 72 * (5/18) * 18 meter --eqn(2)
so eqn(1) - eqn(2) = 240 meters
- by rohan_patel
Tue Mar 19, 2013 11:38 pm- Forum: Problem Solving
- Topic: What is the length of the platform in meters...............
- Replies: 46
- Views: 27589