How many seven digit telephone numbers are possible the first digit cannot be three and the number must be a multiple of 10
1 answer:
Answer:
900,000.
Step-by-step explanation:
If the number is a multiple of 10 it must end in zero.
The first digit can be any one of 0-9 except 3 - that is one of 9 digits.
All other positions (2nd to 6th) can be any one of 0 to 9 (10 digits).
So the number of possible telephone numbers is:
9*10*10*10*10*10
= 900,000.
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Hey there! :)
There are 3 pennies
There is a total of 18 coins; 3 + 5 + 4 + 6 = 18
3 ÷ 18 = 0.16666666667 = 0.17
Your answer is 1/6 or 0.17
Hope this helps :)
