SOLUTION: Two dices are thrown at a time. What is the probability that the sum of the numbers on two dice is 10 or the product of two numbers is >= 25 or both.

Question 935482: Two dices are thrown at a time. What is the probability that the sum of the numbers on two dice is 10 or the product of two numbers is >= 25 or both.
Found 2 solutions by oscargut, ewatrrr:
Answer by oscargut(2103) (Show Source): You can put this solution on YOUR website!
P(sum 10) = 3/36
P(product >=25) = 4/36
P(sum 10 and product >=25) = 1/36
So the required probability is: (3+4-1)/36 = 1/6
Answer: 1/6
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Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
___1_2_3__4__5__6
1|_2_3_4__5__6__7
2|_3_4_5__6__7__8
3|_4_5_6__7__8__9
4|_5_6_7__8__9_10
5|_6_7_8__9_10_11
6|_7_8_9_10_11_12
..........
__1__2__3__4__5__6
1|_1__2__3__4__5__6
2|_2__4__6__8_10_12
3|_3__6__9_12_15_18
4|_4__8_12_16_20_24
5|_5__10_15_20_25_30
6|_6__12_18_24_30_36
......
P(A or B) = P(A) + P(B) - P(A and B)
P( x = 10 0r x >= 25) = = 1/6
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