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Evalute the expression

Evalute the expression
asked 160k views
4 votes
Evalute the expression

Evalute the expression-example-1
asked
User Talhature
by
8.2k points

1 Answer

4 votes

Answer:

11/7

Concept:


C(n,\ r)=(n!)/(r!(n-r)!)

Explanation:


C(11,\ 9)=(11!)/(9!2!)=(11\cdot10)/(2)=55\\\\C(4,\ 2)=(4!)/(2!2!)=6\\\\C(10,\ 6)=(10!)/(6!4!)=(10\cdot9\cdot8\cdot7)/(4\cdot3\cdot2\cdot1)=210\\\\\\Ans: (55\cdot6)/(210)=(11)/(7)\ or\ 1(4)/(7)

answered
User MatejMecka
by
7.9k points
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