3 years ago

A fair coin is tossed 5 times. What is the probability of obtaining exactly 3 heads.

1 answer:

3 0

Coin tossed : 5 times
Heads and 3 times

Probability: 3:5

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kolbaska11 [484]

Answer:

false I believe

Step-by-step explanation:

hope its right

8 0

3 years ago

Rufina [12.5K]

Answer: $\frac{^{10}C_5}{^{12}C_5}$

Step-by-step explanation:

Given a total of 12 diesel engines

out of which 2 are defective

Company have to choose 5 good engines to ship.

Therefore no of ways in good engines are selected is $^{10}C_5$

no of ways in which any 5 engines are selected from a total of 12 engines is

$^{12}C_5$

Therefore the required probability = $\frac{^{10}C_5}{^{12}C_5}$

= $\frac{7}{22}$ =0.318

3 0

3 years ago

Alekssandra [29.7K]

You are correct, it is.

6 0

3 years ago

Veronika [31]

x(t-u) = 3t
dividing both sides by (t-u):
So.. x = 3t/(t-u)

6 0

3 years ago

kiruha [24]

(2n+4)x(4n+7)

= 8n^2+14x+16n+28
=8n^2+30n+28

that's it :) !!

5 0

3 years ago