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What is the minimum natural number that is both odd and composite?
The minimum natural number that is both odd and composite is 9
The sum of the product of two continuous natural numbers plus 11 is a composite number. What is the minimum sum of the two?
If the two numbers are 1 and 2, then the sum of their product and 11 is: 1 × 2 + 11 = 13, which is prime; if the two numbers are or 2 and 3, then 2 × 3 + 11 = 17, which is prime; if the two numbers are 3 and 4, then 3 × 4 + 11 = 23, which is prime; if the two numbers are 4 and 5, then 4 × 5 + 11 = 31, which is prime; if the two numbers are 5 and 6, then 5 × 6 + 11 = 41, which is prime; if the two numbers are 6 and 7, then 6 × 7 + 11 = 53, which is prime, If these two numbers are 7 and 8, then 7 × 8 + 11 = 67, they are prime numbers; if these two numbers are 8 and 9, then 8 × 9 + 11 = 83, they are prime numbers; if these two numbers are 9 and 10, then 9 × 10 + 11 = 101, they are prime numbers; if these two numbers are 10 and 11, then 10 × 11 + 11 = 121, they are composite numbers; that is, the minimum sum of these two numbers is 10 and 11, 10 + 11 = 21, a: the minimum sum of these two numbers is 21
How many is the sum of these two continuous numbers plus the smallest product of 11?
If the two numbers are 1 and 2, then the sum of their product and 11 is: 1 × 2 + 11 = 13, which is prime; if the two numbers are or 2 and 3, then 2 × 3 + 11 = 17, which is prime; if the two numbers are 3 and 4, then 3 × 4 + 11 = 23, which is prime; if the two numbers are 4 and 5, then 4 × 5 + 11 = 31, which is prime; if the two numbers are 5 and 6
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