If 4 whole numbers are taken at random and multiplied together, what is the chance that the last digit in the product is 1, 3, 7 or 9?
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Answer
2/5
explanation
the total number comes on last =10 (1,2,3,4,5,6,7,8,9,0)
given digit =4 (1,3,7,9 )
required probability = 4/10 = 2/5
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