SOLUTION: The book tells me to "find several numbers that have exactly three divisors and several others that each have exactly four divisors."

Question 158859This question is from textbook Interactive Math Program year 2
: The book tells me to "find several numbers that have exactly three divisors and several others that each have exactly four divisors." This question is from textbook Interactive Math Program year 2

Answer by vleith(2983) (Show Source): You can put this solution on YOUR website!
For three divisors, pick a small prime integer and square it. The divisors will be that number, 1 and the squared value. For instance, pick 2. 2*2 = 4. So the factors are 1, 2, 4
For four divisors, Pick two small prime numbers and multiply them. The facotrs will be those two numbers, 1 and the product of the two numbers. For instance, pick 2 and 3. Then you get 1, 2, 3, 6

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