[anupam_khanna]

Originally Posted by nagi_nov3

yes ur corret,

the thing is 3.667 mod 1000 = 1

means 3.667 = 1

3 = 1/667

3 = 667^-1

so 3^-2 = 667^2

thanks dude..

[anupam_khanna]

2. how many 0's are there at the end of 626!-625! ??

[warrior]

Originally Posted by anupam_khanna

2. how many 0's are there at the end of 626!-625! ??

156

find out the no of zeros at the end of 625!

[Varun Khullar]

Originally Posted by anupam_khanna

2. how many 0's are there at the end of 626!-625! ??

156..

for.. i am stupid ...

[hanuman]

Originally Posted by anupam_khanna

2. how many 0's are there at the end of 626!-625! ??

Is it 160 zeros ?
626!-625!=625*625! No of 5's in this product is 160

[nagi_nov3]

Originally Posted by anupam_khanna

2. how many 0's are there at the end of 626!-625! ??

626 .625! - 625!

625!.625

625! will have = 156 and 625 will have 4 = 160

[amitnsitian]

Originally Posted by anupam_khanna

2. how many 0's are there at the end of 626!-625! ??

this wil reduce to 625*625!, so the answer is 160 - 156 5's in 625! and four 5's in 625

[vinit456]

Originally Posted by anupam_khanna

2. how many 0's are there at the end of 626!-625! ??

626!-625

=626!-625!
=625!(626-1)
=625!625

=5^156*5^4

So 160.............

[Varun Khullar]

yaaro.. i
25! ka mera answer bahut weird ho rahe hai....
mera 4 aaraha hai...
consider.. 10!
its 8...8^2 5!/2^5

yaar i am getting confused..
consider.. brute force..
10! gives 8..
now 5 comes in 15 ,20 and 25..
so 5*3 ..5*4 5*5 or write 10*5/2 ,10*3/2 ,10*4/2 ..
3*4*5 /2^3 or 5!/ 2^4 or 15/2 ......
8^2 .. 0r 4 ...i am getting 4 as answer...

[Varun Khullar]

yaaro.. i
25! ka mera answer bahut weird ho rahe hai....
mera 4 aaraha hai...
consider.. 10!
its 8...8^2 5!/2^5

yaar i am getting confused..
consider.. brute force..
10! gives 8..
now 5 comes in 15 ,20 and 25..
so 5*3 ..5*4 5*5 or write 10*5/2 ,10*3/2 ,10*4/2 ..
3*4*5 /2^3 or 5!/ 2^4 or 15/2 ......
8^2 .. 0r 4 ...i am getting 4 as answer...