If you have a set of 45 numbers, then there is one combination that includes all 45 numbers and 45! = 45 x 44 x 43 x ... x 2 x 1 ≈ 1.19622 x 1056 permutations (ways of ordering) all 45 numbers.
About 13million,
Any 6 from 45 = 814506045C6 = 8145060
Using the combination fuction, chose three numbers from 45 numbers. The answer is 14,190.
There are 45 prime numbers from 1 to 200.
Six: 1 3 5 9 15 45.
There are 45 such numbers.
About 13million,
Any 6 from 45 = 814506045C6 = 8145060
There are 45 such numbers.
9, 15, 45 are the composite factors of 45.
Number of combinations = 45C6 = 45!/6!(45-6)! = 8,145,060
There were mark numbers from 1 to 24 with many variations, also about 8 marks of Seafire. Every mark had many variations so there was a large number of slightly different aircraft.
90/2 = 45 180/4 = 45 and infinitely many more.
number of prime numbers between 45 and 60 = 3 prime numbers between 45 and 60 = 47 53 59
Using the combination fuction, chose three numbers from 45 numbers. The answer is 14,190.
45
45 of them.