What is the number of zeros of the product of the first 100
numbers ?
- 37 Answers
- 40924 Views
- Deshaw, RR Donnelley, RRDonnelley, Wipro, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / cnu
24.
exp: 0 is formed by multiplying 5 with 2. so first we find
how many 5's and 2's are there in 100!.
No of 5's : 100/5=20/5=4/5.
20 +4 =24.
No of 2's : 100/2=50/2=25/2=12/2=6/2=3/2=1/2.
50 +25 +12 +6 +3 +1.
It has 24 5's and 2's.
so the no. of zeros=24.
| Is This Answer Correct ? | 25 Yes | 0 No |
Answer / sumit
It will be minimum of power of 2 and 5 as product of 2 and 5
makes 10.
Power of 2 in this case 94
Power of 5 in this case 24
So answer is 24
| Is This Answer Correct ? | 15 Yes | 0 No |
Answer / daya
the product of (even number) and 5 results in "0" of unit's
place.
no. of 5's from 1 to 100 = 100/5 = 20
but in 25, 50, 75 and 100, there is one more 5
25 = 5*5*1
50 = 5*5*2
75 = 5*5*3
100= 5*5*4
four 5's extra
therefore no. 0f F's = 20+4 = 24
| Is This Answer Correct ? | 8 Yes | 1 No |
Answer / rashmi
The product of the first 100 numbers is
933262154439441000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000.
so the number of zeros of the product of the first 100
numbers is 143.
| Is This Answer Correct ? | 5 Yes | 0 No |
Answer / praveen
if it is 0*1*2........*100 clearly answer is 1;if 4m
1*2*....100 answer is 24
| Is This Answer Correct ? | 9 Yes | 5 No |
Answer / deepak
Any Number N you want to find the number of zeros in
product expand it in Standard form say for example
(22*25*20*11)=(2*11)*(5*5)*(2*5*2)*(11)
No of 2's= 3
No of 5's= 3 as 2*5=10 so there are 3 combinations of 2*5
so totaly 3 zeros.
For Fafctorial just use this 100! = [100/5]+[100/25]=20+4=24
| Is This Answer Correct ? | 4 Yes | 0 No |
Answer / davinder
http://www.calculatorpro.com/calculator/factorial-calculator/
100! = 93,326,215,443,944,102,188,325,606,108,575,267,240,944,254,854,960,571,509,166,910,400,407,995,064,242,937,148,632,694,030,450,512,898,042,989,296,944,474,898,258,737,204,311,236,641,477,561,877,016,501,813,248
| Is This Answer Correct ? | 1 Yes | 0 No |
Length and breadth of a rectangle are in ratio 7:5. If length is reduced by 5 and breadth by 2, area reduces by 65. Find length and breadth.
which questions will be coming
pls send me state bank of india(po's) previous question papers.
A person left house with speed 40 mile per hour his wife after 30 minutes left to catch him at a speed of 50. In what time she will catch?
(Momentum*Velocity)/(Acceleration * distance ) find units.
xsqrt(0.09)=3 , then x equals
In the reading room of a library, there are23 reading spots. Each reading spot consists of a round table with 9 chairs placed around it. There are some readers such that in each occupied reading spot there are different numbers of readers. If in all there are 36 readers, how many reading spots do not have even a single reader?
At 20% discount, a cycle is sold at a selling price of 2500 Rs. What is the actual price?
0 Answers BPCL Bharat Petroleum, Sonata,
7 students can complete a task of making 9 scientific models in 21 days. How many students can make 3 models in 14 days.
in which state does bay of bengal exist
one question has last part like difference between two terms is 9 and product of two numbers is 10, what is the squares of sum of numbers?
City A's population is 68000, decreasing at a rate of 80 people per year. City B having population 42000 is increasing at a rate of 120 people per year. In how many years both the cities will have same population?
7 Answers 3i Infotech, Canara Bank, Geodesic, Hewitt, Mu Sigma,
English 
