Question

НОК (45; 225) 2) НОК (23;31); (34;85).

Answer 1

НОК (45;225) = 5
НОК (23;31) = 713
НОК ( 34;85) = 170

Answer 2

It looks like you're asking for the least common multiples (LCM) of various pairs of numbers. The LCM is the smallest multiple that two or more numbers have in common. Let's calculate the LCM for the given pairs:

1. LCM(45, 225): To find the LCM of 45 and 225, we can first find their greatest common divisor (GCD) and then use the relationship: LCM(a, b) = (a * b) / GCD(a, b). GCD(45, 225) = 45 (since 45 is a factor of 225). LCM(45, 225) = (45 * 225) / 45 = 225.

2. LCM(23, 31): The numbers 23 and 31 are prime, meaning they only have 1 and themselves as factors. Therefore, LCM(23, 31) = 23 * 31 = 713.

3. LCM(34, 85): To find the LCM of 34 and 85, we can follow the same process as before: GCD(34, 85) = 1 (since 34 and 85 are relatively prime). LCM(34, 85) = (34 * 85) / 1 = 2890.

So, the least common multiples are:

1. LCM(45, 225) = 225
2. LCM(23, 31) = 713
3. LCM(34, 85) = 2890.