a 4 digit number is to be formed from numbers 2-9 using 4 different numbers selected from 2,3,4,5,6,7,8,9. find the number of possible combinations if the number:

a) is odd and greater than 5000

b) a number greater than 5000 with the last number being a prime

asked by guest
on Oct 25, 2024 at 5:16 am



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