06-09-2021
Mathematics

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4. How many numbers of three different digits can be made by using the digits 1, 2, 3, 4,5,6? How many of them are even?

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mhanifa mhanifa

06-09-2021

Answer:

Let the 3 digits are xyz.

For x we have 6 options, for y - 5, for z - 4 since all digits are different.

Number of options:

6*5*4 = 120

Even numbers will have z = 2, 4 or 6, then

x - 5 options, y - 4 options

Number of options:

5*4*3 = 60

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