At least factor of 3 and least prime number of b is 7 the least number...
If 3 is the least prime factor of number a and 7 is the least prime factor of number b, then the least prime factor of a + b, is The least prime factor of a+b has to be
2
; unless a +b is a prime number greater than 2. Suppose a +b is a prime number greater than 2.
At least factor of 3 and least prime number of b is 7 the least number...
Least common multiple of (a, b)
Factors of 3 are 1 and 3, so the least factor of a will be 3. Since the least prime number of b is 7, the least number factor of b will be 7.
Calculating the least common multiple of (a, b)
To find the least common multiple of a and b, we need to multiply the least factors of a and b together.
So, the least common multiple of (a, b) will be 3 x 7 = 21.
Explanation
When finding the least common multiple of two numbers, we look for the smallest number that is a multiple of both numbers. In this case, the least factor of a is 3 and the least prime factor of b is 7. Multiplying these two numbers together gives us the least common multiple of (a, b), which is 21. This means that 21 is the smallest number that is divisible by both 3 and 7.