Question 169952This question is from textbook
: 1.how many 7-digit telephone numbers are possible if the first digit cannot be 0 and
a: only odd digits may be used.
b: the telephone number must be a multiple 0f 10
c: the telephone number must be a multiple of 100
d: the 1st 3 digits are 481
e: no repetition are allowed.This question is from textbook
: 1.how many 7-digit telephone numbers are possible if the first digit cannot be 0 and
a: only odd digits may be used.
b: the telephone number must be a multiple 0f 10
c: the telephone number must be a multiple of 100
d: the 1st 3 digits are 481
e: no repetition are allowed. Answer by 1433(2) (Show Source):
