S2 Exam Review: Set Theory and Probability

Front

What is the intersection of two sets A and B?

Back

The intersection of two sets A and B, denoted as A ∩ B, is the set of elements that are common to both A and B.

Front

Given Set A = {1, 5, 6, 7, 9, 10} and Set B = {3, 5, 9}, what is A ∩ B?

Back

A ∩ B = {5, 9}

Front

What is the probability of drawing two blue marbles from a bag containing 4 red, 7 blue, and 3 green marbles without replacement?

Back

The probability is 42/182.

Front

What is the formula for calculating the probability of an event?

Back

Probability = (Number of favorable outcomes) / (Total number of outcomes).

Front

What is the union of two sets X and Y?

Back

The union of two sets X and Y, denoted as X ∪ Y, is the set of all elements that are in X, in Y, or in both.

Front

Given Set X = {1, 3, 5, 7} and Set Y = {2, 4, 6, 8}, what is X ∪ Y?

Back

X ∪ Y = {1, 2, 3, 4, 5, 6, 7, 8}.

Front

What is the probability of landing on red in a spinner with results: Red (4), Blue (3), Green (2), Yellow (2), Purple (6)?

Back

The probability is 4/17.

Front

How do you express the probability of an event as a fraction?

Back

Count the number of successful outcomes and divide by the total number of possible outcomes.

Front

What is the probability of spinning a multiple of 2 or 5 on a spinner numbered 1 to 9?

Back

The probability is 5/9.

Front

What does it mean for two events to be independent in probability?

Back

Two events are independent if the occurrence of one does not affect the occurrence of the other.