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Viktor [21]
3 years ago
9

The numbers 2-12 are written on cards and placed in the bag.what is the probability of picking an even number then replacing it

and then picking a 7?
Mathematics
1 answer:
weeeeeb [17]3 years ago
4 0

2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12

There are 11 numbers on cards.

6 cards contain even numbers.

Answer: p(even) = 6/11

There is only one card with a 7. After the first card is picked and returned, there are 11 cards in the bag again.

p(even then 7) = p(even) * p(7) = 6/11 * 1/11 = 6/121

Answer: p(even then 7) = 6/121

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