Jim writes down the numbers from 1 to 100. ben puts a red spot on all

Category: Mathematics

jim writes down the numbers from 1 to 100. ben puts a red spot on all the even numbers and heen puts a blue spot on all the multiples of 3.

what is the largest number that has a both red and a blue spot?

how many numbers have neither a blue or a red spot?

sophie puts a green spot on all the multiples of 5. how many numbers have exactly two coloured spots on them?

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