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3 years ago

Please help! Thanks!

Mathematics

2 answers:

kykrilka [37]3 years ago

8 0

Answer:

below

Step-by-step explanation:

1) correct

2) incorrect

postnew [5]3 years ago

6 0

Answer:

1. Correct

2. Incorrect

Step-by-step explanation:

( - 1 + 1 ) / - 1

= 0 / - 1

= 0

- 1 / 1 = - 1

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Step-by-step explanation:

Number of balls in the urn = 12

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Let $A_i\,,\,B_i\,,\,C_i$ denotes the event of getting white ball by A, B and C

a) each ball is replaced after being drawn.

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b)the balls that are withdrawn are not replaced.

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If A lost and B wins: $P\left ( B_1|A_1^{c} \right )=\frac{4}{11}$

If A and B lost and C wins: $P\left ( C_1|A_1^{c}\,B_1^{c} \right )=\frac{4}{10}$

and so on....

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