Question

A customer remembers that 2, 4, 7, and 9
are the digits of a four-digit access code for an automatic
bank-teller machine. Unfortunately, the customer has forgotten
the order of the digits. Find the largest possible

Answer 1

Find the largest possible number
of trials necessary to obtain the correct code.

Answer 2

is it 4! ?

Answer 3

@bibby

Answer 4

there are four possible digits and four places.

now if we use 2,4,7, or 9, how many numbers can we use in the 2nd position?

Answer 5

3

Answer 6

o am i right is 4! ( four factorial )

Answer 7

4*3*2*1 ?

Answer 8

dude please tell me quickly

Answer 9

yeah 4!

Answer 10

Thamks bro