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Only 5 ways: one each with one of the letters missing.

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How many four digits numbers can be made with 1 4 5 9 without repetition?

To calculate the number of four-digit numbers that can be made using the digits 1, 4, 5, and 9 without repetition, we use the permutation formula. Since there are 4 digits to choose from for the first digit, 3 for the second, 2 for the third, and 1 for the fourth, the total number of permutations is 4 x 3 x 2 x 1 = 24. Therefore, there are 24 different four-digit numbers that can be formed using the digits 1, 4, 5, and 9 without repetition.


How many different numbers can you form using all four numbers of 1 9 8 4?

The four digits can be used to produce infinitely many different numbers if repetition is permitted. Without repetition, there are 24 possible numbers. A lot more can be produced if the numbers are combined using binary oprations, fore example, 19 * 8/4 = 19*2 = 38.


How many four-letter arrangements can be made of the letters a c e f and h if there is repetition of letters?

There are 5 letters: a c e f and h.If the letters can be repeated, then there are five possibilities for each space in the four-letter arrangement. The number of arrangements then is:5*5*5*5 = 54 = 625.


What is the difference between the largest 4 digit number with repetition and smallest 3 digit number with repetition?

Largest four digit number with repetition = 9999 = x (let) Smallest Three digit number with repetition = 111 = y (let) Answer = x-y = 9999-111 = 9888 -----------------(Ans.)


What four digit numbers can 6789 make?

The four-digit numbers that can be formed using the digits 6, 7, 8, and 9, without repetition, are all the permutations of these four digits. There are 24 possible combinations, including numbers like 6789, 6798, 6879, and so on. Essentially, any arrangement of these four digits constitutes a valid four-digit number.

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