There are three dials on a combination lock. Each dial can be set to one of the numbers 1, 2, 3, 4, 5
The three digit number 514 is one way the dials can
be set as shown in the diagram.
a) Work out the number of different three digit numbers
that can be set for the combination lock.
b) How many of the possible three digit numbers
have three different digits?

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.

answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d

77

step-by-step explanation: