In a group of 27 pupils, 15 play the flute only. 2 play the piano only. 8 play neither instrument. A student is selected at random. What is the probability the student plays both instruments?

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is: