I roll a 6sided dice twice. What the propability to get the same number twice?

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I roll a 6sided dice twice. What the propability to get the same number twice?

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Answer 1 · 2018-06-28T20:19:03

$1/6$ as six of thirty six combinations have the same number.

Answer 2 · 2018-06-28T21:09:57

$= 1/6$

Explanation:

The probability of getting the same number each time is:

$= P("1 and 1" ) +P("2 and 2" ) + P("3 and 3" ) +P("4 and 4" )$

$+ P("5 and 5" ) + P("6 and 6" )$

The probability of getting one number on one dice is $1/6$ as there is 6 different outcomes possible, and hence the probability of getting that same number in the second dice is also $1/6$ as they are independent events, Hence probability of getting same on two occurrences is $1/6 xx 1/6 = 1/36$

$=> = 1/36 + 1/36 + 1/36 + 1/36 + 1/36 + 1/36 = 6/36 = 1/6$

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I roll a 6sided dice twice. What the propability to get the same number twice?

2 Answers

Explanation:

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