Question

How many three digit even numbers can be formed by using the digits 5, 6, 7, 8 and 9 if repetition of digits is allowed ? ​

Answer 1

Answer:

24

Step-by-step explanation:

There is condition for unit's place(i.e. even no.)

So, for unit's place, there would be 2 ways

For hundred's place there could be 4 ways

& for ten's place there could be 3 ways

So, it would be like

$4 \times 3 \times 2 \\ = 24$

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