Question

A pair of dice is trown once.find the probability of getting the same no on each die?

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Answer 1

when we throw 2 dices then total number of events is 36.

only 6 times [(1,1),(2,2),(3,3),(4,4),(5,5),(6,6)] the number on both dice is same.

probability = 6/36 = 1/6

Answer 2

We can write it like,

11 12 13 14 15 16
21 22 23 24 25 26
31 32 33 34 35 36
41 42 43 44 45 46
51 52 53 54 55 56
61 62 63 64 65 66

These are possible outcomes.

Probability = 6/36 = 1/6