What is the number of zeros at the end of the product of the numbers from 1 to 100?
Submitted by: Administratorzeros are obtained when the product of numbers involves the number '5' or multiples of number '5'.
for example,the product of 1*2*3*4*5=120 i.e there is only one zero bcoz there is only one '5' and no other multiple of '5' is involved in multiplication.
similarly 1*2*3*4*5*6*7*8*9*10=3628800 i.e there are 2 zeros in the end product bcoz there is a '5' and a '10' which is a multiple of '5' are involved.
however in 25*24=600 you see 2 zeros in the end product bcoz 25 can be written as 5*5.
therefore the number of zeros in the end product of numbers 1 to 100 is 23
Submitted by: Administrator
for example,the product of 1*2*3*4*5=120 i.e there is only one zero bcoz there is only one '5' and no other multiple of '5' is involved in multiplication.
similarly 1*2*3*4*5*6*7*8*9*10=3628800 i.e there are 2 zeros in the end product bcoz there is a '5' and a '10' which is a multiple of '5' are involved.
however in 25*24=600 you see 2 zeros in the end product bcoz 25 can be written as 5*5.
therefore the number of zeros in the end product of numbers 1 to 100 is 23
Submitted by: Administrator
Read Online Aptitude Job Interview Questions And Answers
Top Aptitude Questions
☺ | 9,18,21,25,20, What is the next number in the above Sequence? |
☺ | A, B and C starts from a point on a circle. A and B goes clockwise and C anticlockwise. A meets C after 88s B meets C after 110s. After how many seconds A meets B? |
☺ | A dishonest dealer professes to sell his goods at cost price. But he uses a false weight and thus gains 300/47% for a kg, he uses a weight of |
☺ | One fast typist type some matter in 2hr and another slow typist type the same matter in 3hr. If both do combine in how much time they will finish? |
☺ | The cost of 17 apples, 9 oranges , 13 bananas is rs 130 , whereas cost of 13 oranges, 7 apples and 10 bananas is rs 100. find the cost of 1 apple , 1 banana and 1 orange put together? |
Top Basic Job Categories
☺ | Targeted Selection Interview Questions. |
☺ | Business intelligence Interview Questions. |
☺ | Puzzles Interview Questions. |
☺ | Behavioral Interview Questions. |
☺ | Freshers Graduate Interview Questions. |