Capgemini
Company
Numerical Ability
Number System
how many zeroes at the end of 50!?
Read Solution (Total 11)
-
- 50/5^1 = 10
50/5^2 = 2
Total no. of zero's ll be 10 + 2 = 12
Ans : 12 - 10 years agoHelpfull: Yes(30) No(1)
For calculating the no. of zero's at the end of n!, We have to divide n by successive powers of 5...
n/5^1 + n^5^2 + n/5^3 + ... till the quotient gives a non-zero value...
Note here we have to consider only the quotient... remainder should be neglected...
- 10 years agoHelpfull: Yes(12) No(0)
- 50/5=10
10/5=2
10+2=12... - 10 years agoHelpfull: Yes(4) No(1)
- Why are v dividing it by 5 only
- 10 years agoHelpfull: Yes(3) No(0)
- 10=5*2. the no. of 5s in 50! is less than the no. of 2s.
therefore, the no. of 0s at the end will be equal to the highest power of 5 in 50!.
50/5=10
10/5=2
2/5=0
therefore, no. of 0s at the end=10+2+0=12 - 10 years agoHelpfull: Yes(2) No(0)
- (50/5^1)+(50/5^2)= 10 + 2 =12
Answer : 12 - 10 years agoHelpfull: Yes(1) No(0)
- 50/5=10
50/25=2
total zero=10+2=12 - 10 years agoHelpfull: Yes(0) No(1)
- How did u do that @saraswathy
- 10 years agoHelpfull: Yes(0) No(1)
- I count the numbers that end in zero, namely 10,20,30,40,50 (that
will put 5 zeroes at the end of our answer.
and,50 has to be counted twice because
50 is 5 x 10. For example, if you multiply 50 by an even number like
50 x 4, you get 200, which has 2 zeroes at the end.
=>5+1=6 zeroes
Then the numbers that
end in 5 are 5,15,25,35,45 (There are 5 of them, but don't forget
that 25 is multiples of 5^2, so we have to count it twice).
=>5+1 zeroes
so, finally
6+6=12 zeros for 50! - 10 years agoHelpfull: Yes(0) No(1)
- 12 i.e 25/2
- 9 years agoHelpfull: Yes(0) No(0)
- why all of u dividing the nmbr by 5, 5^2,... why not by 2, 3,4,6 etc.plzz tell me
- 6 years agoHelpfull: Yes(0) No(0)
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