all the nubers from 1 to 99 are multiplied together. Use a pattern to determine the last digit of the product. Justify your answer.
2 answers
all the mumbers from 1 to 99
clearly the last digit has to be a zero.
(actually the last few digits will be zeros, since factors like 2x5 or 10 or 20 etc all will produce an extra zero in the product)
(actually the last few digits will be zeros, since factors like 2x5 or 10 or 20 etc all will produce an extra zero in the product)