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11 November 2014 Please help..I don't know how to solve this....CH -permutation and combination... The number of arrangements of 10 different things taken 4 at a time in which one particular things always occurs is...
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Ganeshbabu K

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Ganeshbabu K (Expert)
11 November 2014 Hi kinjal.,

did u drafted question exactly

Okay.. answer is =4*(10-1)P(4-1)
=4*9P3
=4*(9*8*7/1*2.3)
=4*84
=336
.
.
Let me know if answer is different from above

if answer is different please give exact wording of question from text book

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