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3 years ago

9

What is the simplified value of the expression below?

2 answers:

bagirrra123 [75]3 years ago

7 0

1/2
Is the answer
To the problem

ankoles [38]3 years ago

7 0

Answer:

option C : 1/2

Step-by-step explanation:

$\frac{1}{3} \div \frac{2}{3} \\\\\frac{\frac{1}{3}}{\frac{2}{3}}\\\\\frac{1}{3} \times \frac{3}{2} \\\\\frac{1}{2}$

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Exercise 4.

a) How many nonempty subsets are in a set of 5 elements?

Each element has 2 choices that are either selected in subset or not selected in subset.

Here, total choices will be $2^{5}$

And it is 1 time that no element is selected.

So, the number of non empty subsets will be = $2^{5}-1$

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Same like above part, here Erika has two choices for each friend, either invite or not invite.

So, she has total $2^{5}=32$ choices.

1 way to not invite anyone.

Hence, the number of ways can she invite one or more friends to a dinner party = $32-1=31$ ways.

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