Question

how many three digit numbers can be made using the digits 2,3,4,5&6 if no digit can be repeated? How many of these are greater than 400?

Answer 1

the first answer is 60 and the second one is 36

Answer 2

i think i got the first part its 5!/(5-3)!

Answer 3

which equals 5x4x3 = 60 but i can get the second one

Answer 4

if no digit can be repeated is it 5*4*3

Answer 5

the ones that are greater than 400 means first digit is 4 or 5or 6 so there are 3*4*3

Answer 6

ok lol i just worked it out aswell:)

Answer 7

good!