# A twosome of dice is rolled three times. Find the probability that?

A) exactly two are 7's

B) At least two are 7's

when you roll a pair of dice, the probability of getting a 7 is 16.7%

because:

1, 6

2, 5

3, 4

etc. will be 1/6 x 1/6 each x 6 combinations = 16.7%

So...

A) P(yes, yes, no) = 16.7% x 16.7% x 83.3% = 2.3%

yyn, yny, nyy are adjectives cases with exactly 2 = 2.3% x 3 = 6.9%

B) at least 2: 16.7% x 16.7% = 2.8%

with yyn, yny, nyy, yyy, are adjectives at least 2 = 2.8% x 4 = 11.1%

Depends What Dice,

If its six sided, none

8 sided, a. 1/64

b. <1/64 Source(s): enwioegjeg

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B) At least two are 7's

**Answers:**when you roll a pair of dice, the probability of getting a 7 is 16.7%

because:

1, 6

2, 5

3, 4

etc. will be 1/6 x 1/6 each x 6 combinations = 16.7%

So...

A) P(yes, yes, no) = 16.7% x 16.7% x 83.3% = 2.3%

yyn, yny, nyy are adjectives cases with exactly 2 = 2.3% x 3 = 6.9%

B) at least 2: 16.7% x 16.7% = 2.8%

with yyn, yny, nyy, yyy, are adjectives at least 2 = 2.8% x 4 = 11.1%

Depends What Dice,

If its six sided, none

8 sided, a. 1/64

b. <1/64 Source(s): enwioegjeg

**Related Questions:**How do casinos take in for questioning counterfeiters?

I see dealers accepting $100 bills all the time without checking to see if they're authentic. How do they protect themselves from, and catch counterfeiters? Cameras... Security... Oh, and more cameras. You can't hide from them. Darlin, Well, it's call the eye in the sky...lol they have so much security on respectively table or dealer...

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I've been playing online poker for like 2 years now and hold come to realize i can NOT stick to a set bank roll. everytime i play even if i win i feel that need to submerge into a quick game and play some more and most of the time i do. if i lose a bit of...

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