Hello help me solve this

Question

in a class of 100 students 30 are in mathematics moreover of the 40 females in the class 10 are in mathematics if a student is selected at random from the class what is the probability that the student will be a male or be in mathematics

Answer 1

The probability of male is simple. M + F = 100 and we know (from the question) that F = 40. So 60 out of 100 students is male, hence the probability of a randomly selected student being male is 60% (0.6).

Likewise, 30 of the 100 are in mathematics, so 30% is the probability.

There is extraneous information given in the question (that 10 of the 40 women are in mathematics). This would only be needed if you were asked the probability of selecting a woman in mathematics, or a man in mathematics.