1. A) How many three-digit numbers are there for which the sum of the digits is...

1.

A) How many three-digit numbers are there for which the sum of the digits is at least 25?

B) How many three-digit numbers can be formed if only odd numbers are allowed to be re-used

Please combinatorics principles where applicable.

Expert Solution

Colby Messinger answered 2 years ago

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5. Using only the digits of 1, 4, 5, 8, (a) How many three digit numbers can be formed? (b) How many odd numbers greater than 10 can be formed? (c) How many even number less than 300 can be formed? Repetition is allowed!

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1. How many 6 digit strings have a sum of 35? in a digit string the...

1. How many 6 digit strings have a sum of 35? in a digit string the first digit can be zero 2. In how many ways can one arrange the set {A,B,C,D,E} if E can not be on either end of the string A must be in an even position B must be in an odd position (Solve by direct method and P.I.E.)

a) How many 3-digit numbers are there? b) How many 3-digit numbers can you make with...

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Question: How many even four-digit numbers can be formed from the digits 0,1,2,5,6 and 9. If...

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