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How many two digit even number of distinct digits can be formed with the digits 1,2,3,4,5?

Answer»

Solution :Two digit even numbers of distinct digits are to be FORMED with the digits 1,2,3,4,5. Here the even numbers must be END with 2 or 4. When 2 is placed in the UNIT place, the tenth place can be FILLED up by other 4 digits in 4 different ways. SIMILARLY, when 4 is placed in the unit place, the tenth place can be filled up in 4 different ways.
`:.` The total number of two digit even numbers` =4+4=8.`


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