Why does this question not require a calculator?
When the integers from 1 to 30 are multiplied, determine how many consecutive digits starting from the ones (1s) position are zeros.
Would this be a fair question for some standardized test?
source.
Why does this question not require a calculator?
When the integers from 1 to 30 are multiplied, determine how many consecutive digits starting from the ones (1s) position are zeros.
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