Probability test

In a class of 50 students, 30 take philosophy, 23 take sociology, and 12 take both. How many students take neither class?

What is A ⋂ B =

What is basketball ∪ Football?

What is the probability of selecting a face card or a black ace from a deck of cards?

What is the probability of choosing an Ace, replacing it, then choosing a diamond?

If I role a 15-sided die 17 times, about how many times can I expect to roll a prime number? Round to the nearest whole number.

What is Soccer'?

In a class of 51, 42 take history, 17 take English, and 6 take neither. How many take history and English?

What is Foreign language | Sport?

What are the odds flip a coin twice getting first heads and then tails, and then pulling out a number card from a deck of cards?