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Eduardo thinks of a number between 1 and 20 that has exactly 5 factors. What numbers is he thinking of?

Eduardo is thinking of a “16 “number because 16 number is the only number between 1 to 20 have exactly five-factor 16 factors=1,2,4,8,16.

Did you know?

Did you know that finding a number that has exactly 5 factors can be an interesting mathematical challenge? Eduardo, in this case, is thinking of a number between 1 and 20 with such properties. To determine these numbers, we need to understand the concept of factors. Factors are the whole numbers that divide evenly into another number. For example, the factors of 10 are 1, 2, 5, and 10. However, finding a number with exactly 5 factors narrows down our possibilities. Such numbers can be identified as those that are prime squared. In this case, Eduardo could be thinking of the prime numbers 2, 3, 5, and 7, because their squares (4, 9, 25, and 49) all have exactly 5 factors. So next time you come across a number with exactly 5 factors, you'll know it's likely a prime squared!