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3 years ago

What the ratio of 7:3

Mathematics

1 answer:

Charra [1.4K]3 years ago

4 0

Hey there!

<h2>ANSWER: $14/6$ </h2><h2>EXPLANATION:</h2>

Ratio of $7:3$

If you want to get the ratio, you should multiply the numerator(7) and denominator(3) by 2.

$7*2=14(Numerator)\\3*2=6(Denominator$

So your answer is:

$14/6(ANSWER)$

Hope this helps!

$-TestedHyperr$

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Given : 2D + 1L = 100,
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3 years ago

A bridge hand is made up of 13 cards from a deck of 52. find the probability that a hand chosen at random contains at least 3 ki

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1.
In total there are C(52, 13) ways that we can pick a hand, that is $\frac{52!}{13!39!}$

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3.
first let's find P(a hand contains exactly 3 kings):

P(a hand contains exactly 3 kings)
=n(a hand contains exactly 3 kings)/C(52, 13)

n(a hand contains exactly 3 kings)=C(4, 3)*C(48, 10)

where C(4,3) is the total number of ways we can pick 3 out of 4 kings,

C(48, 10) is the number of picking 10 letters to complete a hand, out of the 52-4=48 non-king cards.

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5.

P(a hand contains at least 3 kings)
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= $\frac{C(4, 3)*C(48, 10)+C(4, 4)*C(48, 9)}{C(52, 13)}$

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$

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