Answer:
6551
Step-by-step explanation:
x=4
9 (4) - 10
9x9x9x9= 6561
6561-10= 6551
Answer:
me neither :c
Step-by-step explanation:
Answer:
68?
Step-by-step explanation:
multiples of 5 end in 5 or 0
_ _ _
last digit has 2 choices ( 5 and 0 )
1,3,5,7,9 are odd
so tens digit has 5 choices but we see that 5 is repeated so we split into more cases
when last digit is 0, tens digit has 5 choices then hundreds digit has 8 choices so 1*5*8=40
when last digit is 5, tens digit has 4 choices and hundreds digit has 7 choices (0 can't be first digit) 1*4*7=28
40+28=68
5 since both numbers are divisible by 5 and not by any smaller number
