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Two different 2-digit numbers are randomly chosen and multiplied together. What is the probability that the resulting product is a multiple of 10?

 Nov 29, 2021
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90 C 2 ==4005 - products of 2 2-digit numbers

There are 1,089 multiples of 10

 

Therefore, the probability is:1,089 / 4,005==121 / 445

 Nov 29, 2021

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