In the number 203,500, the last two zeros are called terminal zeroes. How many terminal zeroes does the product of the first 30 counting numbers (1x2x3....x30) have? Is there a shortcut to finding the answer or do you have to multipy all of the numbers to solve the question? :?
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Multiplication
- Thread starter elmer
- Start date
D
Deleted member 4993
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elmer said:In the number 203,500, the last two zeros are called terminal zeroes. How many terminal zeroes does the product of the first 30 counting numbers (1x2x3....x30) have? Is there a shortcut to finding the answer or do you have to multipy all of the numbers to solve the question? :?
How many numbers end with '0' - from 1 to 30?
How many numbers end with '5' - from 1 to 30?
How many numbers end with '25' - from 1 to 30?
http://www.purplemath.com/modules/factzero.htmelmer said:I am still not sure of what to do.
D
Deleted member 4993
Guest
elmer said:I am still not sure of what to do.
Please answer the questions I asked you - then we can decide on ways to proceed further.