Mathematics, 16.07.2019 12:30 GreenHerbz206

In a sample of 10 cards, 4 are red and 6 are blue. if 2 cards are selected at random from the sample, one at a time without replacement, what is the probability that both cards are not blue?

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Answer from: 6946599268

The probability of both the cards not being blue would be:

- 2/15 or 0.1333

Given that,

Total cards = 10

No. of Red Cards = 4

No. of Blue cards = 6

The probability of not picking a blue card = 4/10 (∵ 4 are red)

As we know,

2 cards are picked at random,

In case,

The cards picked are not replaced, the possible chances of taking red would be = 3/9

Now,

The Probability of not picking a blue card(P) = no. of favorable outcomes/total outcomes

(4/10) × (3/9)

= (4 × 3)/(10 ×

= 12/90

By solving,

12/90

= (6 × 2)/(6 × 15)

= 2/15

Thus, 2/15 or 0.1333 is the correct answer.

Learn more about 'Probability' here:

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Answer from: joynerjaila

The exact answer in fraction from is 2/15

The approximate answer in decimal form is 0.1333 (rounded to four decimal places)

The decimal value 0.1333 is equivalent to 13.33%

These are three ways to say the same basic answer.

Explanation:

We have 4 red cards and 6 blue cards giving 4+6 = 10 total.

The probability of picking not blue (aka picking red) is 4/10 because there are 4 red out of 10 total.

If we don't replace the card we picked, then we have 3 red left over out of 9 total. The probability of picking red again is 3/9

Multiply those fractions
(4/10)*(3/9) = (4*3)/(10*9) = 12/90

Now reduce
12/90 = (6*2)/(6*15) = 2/15
note how the GCF 6 cancels

Using a calculator,
2/15 = 0.1333 approximately
The '3's after the decimal point go on forever.

Answer from: Quest

idk

step-by-step explanation:

Answer from: Quest

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq and the angle ∠orq are opposite, therefore:

$m\angle opq+m\angle orq=180\°\\\\m\angle opq+ (2x + 16)\°=180\°$

then, $m\angle opq+ (2x + 16)\°=180\°$ can be used to d to calculate the measure of ∠opq

Quadrilateral opqr is inscribed in circle n, as shown below. which of the following could be used to

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