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I have $2$ oranges, $1$ apple and $1$ banana. I want to put $2$ of them at a time in $2$ bags, having $1$ ($1$ fruit at max in $1$ bag) each.

The $2$ oranges are indistinguishable (there are two but their value is same). [order does matter for combination]

The bags have positions: like first bag will be at first position and second will be at second position, and it will not be changed.

So please tell me in how many ways I can put them in bags?

yours sincerely

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    $\begingroup$ Are you asking in how many ways two of the four fruits can be distributed to two distinguishable bags so that one fruit is placed in each bag? $\endgroup$ – N. F. Taussig May 2 '15 at 9:50
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Let O be an orange, A be an apple, B be a banana.

There are 3 ways to put fruit in a bag with an orange in the first bag: OO OA OB

There are 2 ways to put fruit in a bag with an apple in the first bag: AO AB

There are 2 ways to put fruit in a bag with a banana in the first bag: BO BA

There has to be either an orange, apple, or banana put in the first bag so these are all 7 ways to put fruit into the two bags.

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