A high school senior applies for admission to two colleges A and B, and suppose that: P(admitted at A) = p1, P(rejected by B) = p2, and P(rejected by at least one, A or B) = p3.
(i) Calculate the probability that the student is admitted by at least one college.
(ii) Find the numerical value of the probability in part (i), if p1 = 0.6, p2 = 0.2, and p3 = 0.3.

(i)

(ii) 0.08

Step-by-step explanation:

(i) The probability that he is admitted by at least one college is the complement of the probability that he is rejected by both colleges.

P(admitted by at least one college) = 1 - P(rejected by both colleges)

P(rejected by both colleges) = P(rejected by A) × P(rejected by B)

P(rejected by both colleges) = (1 - P(admitted by A)) × P(rejected by B)

(ii) If and , then

the answer is 200

step-by-step explanation:

the way the question is worded, it seems to imply the $264 interest is simple interest, not compound interest.

the simple interest for 2 years is $264; the simple interest for 1 year is $132.

$132 interest on a $600 investment means an interest rate of (132/600)*100 = 22%.

the value of $200 at 22% interest compounded annually for three years is

200%281.22%29%5e3

the amount of interest is that value, minus the original $200.

answer for #1 is c

answer for #2 is d

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