SOLUTION: There are 6 students of whom 2 are Indians, 2 American, 2 Russian they have to stand in a row for a photograph so that the two Indians are together, two Americans are together and

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Question 1060956: There are 6 students of whom 2 are Indians, 2 American, 2 Russian they have to stand in a row for a photograph so that the two Indians are together, two Americans are together and so also the two Russians find the number of ways in which they can do so.
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
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For the purposes of your problem you can consider each pair as one single object.

Then your problem is reduced to the simpler one: in how many ways the 3 objects can be arranged in a row?

The answer is 3! = 3*2*1 = 6.

It is the answer to your original problem: in 6 ways.