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In the given problem, apply your knowledge in algebraic expression and basic mathematics specially factoring.
In factoring, the prime number plays vital role. Prime number is a number having a factor of only one and itself. Read more: brainly.ph/question/5827736
factor of 90
not a multiple of 6 and 9
greater than 10 but smaller than 20.
Find the number.
List down all the posible factor of 90.
90 → 2 × 3 × 3 × 5 (prime number factor)
The multiple of 6 are 6, 12, 18, 24
The multiple of 9 are 9, 18, 27, 36
The factor of 90 is can be 2 and 45, 3 and 30, 6 and 15, and 5 and 18.
15 is only the number greater than 10 but less than 20, and 15 is not divisible of 6 and 9.
Learn more about factoring here at https://brainly.ph/question/8822137
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