In how many ways can 8 Pakistanis and, 4 American and 4 Englishmen can be seated in a row so that all person of the same nationality sit together ?
کتنے طریقوں سے 8 پاکستانیوں اور 4 امریکی اور 4 انگریزوں کو ایک قطار میں بٹھایا جا سکتا ہے تاکہ ایک ہی قومیت کے تمام افراد ایک ساتھ بیٹھ سکیں؟
Answer: 3! 4! 8! 4!
Explanation
Taking all person of same nationality as one person, then we will have only three people.
These three person can be arranged themselves in 3! Ways.
8 Indians can be arranged themselves in 8! Way.
4 American can be arranged themselves in 4! Ways.
4 Englishman can be arranged themselves in 4! Ways.
Hence, required number of ways = 3! 8! 4! 4! Ways.
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