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15 votes
15 votes
Ohk sove this first
Multiple correct​

Ohk sove this first Multiple correct​-example-1
User Nick Becker
by
2.6k points

1 Answer

14 votes
14 votes

Answer:

k=3(n+1)(n+2)

Explanation:

Given P(Ei)=in and let P(Ei)=ki(i+1)

so

∑i=1nP(Ei)=k∑i=1ni(i+1)=k[n(n+1)(2n+1)6+n(n+1)2]

so

1=kn(n+1)2[2n+13+1]=k3⋅(n+1)(n+2)

so k=3(n+1)(n+2)

User Sallushan
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3.4k points