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Two fair coins are being used in a probability experiment. During each trial of the experiment, the

Mathematics

1 answer:

padilas [110]2 years ago

6 0

Answer: 50%

Step-by-step explanation:

If we can get a head tails combo in any order we could get a head/tails or a tails/head so there is a 50% probability of getting that combo in a trial

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lyudmila [28]

Answer:

157

Step-by-step explanation:

We are given that

Number of students in maths 2A=n(2A)=51

Number of students in math 2B=n(2B)=80

Number of students in math 2C=n(2C)=70

Number of students in maths 2A and 2B= $n(A\cap B)=15$

Number of students in maths 2B and 2C= $n(B\cap C)=13$

Number of students in maths 2A and 2C= $n(A\cap C)=20$

Number of students in maths 2A ,2B and 2C=4

We have to find the number of students in a set.

Formula: $n(A\cup B\cup C)=n(A)+n(B)+n(C)-n(A\cap B)-n(B\cap C)-n(A\cap C)+n(A\cap B\cap C)$

Substitute the values in the given formula

$n(2A\cup 2B\cup 2C)=51+80+70-15-13-20+4=157$

Hence, total number of students in a set=157

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sergij07 [2.7K]

Answer:

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Step-by-step explanation:

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