SOLUTION: Determine the number of possible 7-digit telephone Nos. if none f the first three digits
(from left) can equal to zero and: (Solve each part separately) [4-Marks]
a) Any digits c
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-> SOLUTION: Determine the number of possible 7-digit telephone Nos. if none f the first three digits
(from left) can equal to zero and: (Solve each part separately) [4-Marks]
a) Any digits c
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Question 1172340: Determine the number of possible 7-digit telephone Nos. if none f the first three digits
(from left) can equal to zero and: (Solve each part separately) [4-Marks]
a) Any digits can be used for the remaining numbers.
b) The first digit must be odd, alternating thereafter between even and odd digits.
c) All digits must be even.
d) No digits can be repeated Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! This is 9*9*9*10000
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9*9*9*5*5*5*5
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9*9*9*5*5*5*5
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9*9*9*10*9*8*7.
(assuming for the last three problems that the restrictions apply only to the last four digits, otherwise the answers are very different.)
