A number has one of its factor as '7'. Find the number.
A number a has 7 as its smallest prime factor, and another number b has 3 as its smallest prime factor. What is the smallest prime factor of the number a−b?
Which of the following numbers has 6 as its factor?
A number a has 7 as its smallest prime factor, and another number b has 3 as its smallest prime factor. What is the smallest prime factor of the number a+b?
Which of the following numbers has both 7 and 5 as factors?
The number 7 has no factors.