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11111nata11111 [884]
2 years ago
6

Write 81/45 in simplest form

Mathematics
1 answer:
allochka39001 [22]2 years ago
5 0

Answer:

9/5

Step-by-step explanation:

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Step-by-step explanation:

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2 years ago
A group of n people enter an elevator in a building with k floors. Each person independently selects a floor uniformly at random
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Answer:

Hence the person stop at floor by at least one person will be

E(X)=(summation from K=1 to k)[1-{(k-1)/k}^n]

Step-by-step explanation:

Given:

There are n peoples and k floors in a building.

Selects floor with 1/k probability .

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Elevator stop at each floor by at least one person.

Solution:

Now

let K= number of floor at which at least one person will be stopping.

For getting E(X)

consider a variable Ak =1 if a least one person get of the elevator

and values for k=1,2,3.....k

K=(summation From k=1 to k)Ak

E(K)=((summation From k=1 to k) E[Ak]

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Hence the person stop at floor by at least one person will be

E(K)=(summation from K=1 to k)[1-{(k-1)/k}^n]

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Step-by-step explanation:

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