There are many possible answers. One possible pair is 2 and 40.
5 and 8
40 and any of its factors.
2 and 40 4 and 10
The least common multiple is the smallest number that is multiple of two or more numbers. 24: 48, 72, 96, 120 40: 40, 80, 120 The LCM for 24 and 40 is 120.
If the numbers are x and y then x + y = 40 x - y = 10 so x = 25, y = 15 Then LCM(x, y) = LCM(25, 15) = 75
The HCF is always a factor of the LCM of two numbers. The HCF is a factor of both the numbers which are factors of their LCM. Thus the HCF is also a factor of the LCM of the two numbers.
You need at least two numbers to find an LCM.
40 and any of its factors.
16 and 24
72 and 40
72 and 40
You need at least two numbers to find an LCM. If that's 8 and 10, the LCM is 40.
2 and 40 4 and 10
4 and 40 8 and 20
4 and 40 8 and 20
You need at least two numbers to find an LCM. If that's 5 and 40, the LCM is 40.
The LCM is 40.
You need at least two numbers to find an LCM. If that's 30 and 40, the LCM is 120.