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Brilliant_brown [7]
3 years ago
12

Let n be a positive integer. We sample n numbers a1, a2,..., an from the set {1,...,n} uniformly at random, with replacement. We

say that picks i and j with i < j are a match if ai = aj.
What is the expected total number of matches?

Mathematics
1 answer:
zepelin [54]3 years ago
4 0

Answer:

Step-by-step explanation:

You might be interested in
If a fair die is rolled 6 times, what is the probability, rounded to the nearest
trapecia [35]

The probability of rolling the die once to get a four is 1/6

So we do 1/6*1/6*1/6 which is 1/216 since it's combined probabilities

Hope this helped

8 0
2 years ago
Solve<br> 2/3x+4=8 whats x?
PolarNik [594]

Answer:

x = 6

Step-by-step explanation:

\frac{2}{3} x + 4 = 8 \\  \frac{2x}{3}  = 8 - 4 \\ \frac{2x}{3 }  = 4 \\ 2x = 4 \times 3 \\ 2x = 12 \\  x= 6

6 0
3 years ago
Read 2 more answers
Depth: 1.8 m Width: 2.5 m Height: 2 m What is the cuboid's volume?
8090 [49]

Answer:

9 m³

Step-by-step explanation:

The formula for calculating the volume (V) of a cuboid is

V = depth × width × height

  = 1.8 × 2.5 × 2 = 9 m³


5 0
3 years ago
Read 2 more answers
karen brought 3/8 of a gallon of ice tea to a party. Robin brought 15/16 of a gallon of ice tea to the same party. How much ice
Rudiy27

Answer:

1  5/16 gallon

Step-by-step explanation:

Gallon of ice brought by Karen = 3/8

Gallon of ice brought by Robin = 15/16

Total ice team brought by them is sum of Gallon of ice brought by Karen + Gallon of ice brought by Robin

Total ice team brought by Karen and Robin = 3/8 + 15/16

=>  3*2/8*2 + 15/16

we are multiplying with 2 both numerator and denominator in 3/8 so sas the denominator becomes 16 as in other fraction denominator is 16

=> 6/16 + 15/16

=> (6+15)/16 = 21/16

since 21/16 is improper fraction, converting it in mixed fraction we have

21/16 = 1  5/16 gallon

Thus , Karen and Robin have 1  5/16 gallon ice tea together.

7 0
3 years ago
Please help, I will mark Brainliest.
Goshia [24]
It’s rational because the square root of 0.49 is 0.7
3 0
3 years ago
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