So who’s good at math

Events a and b are independent. the probability of a occurring is 2/5. the probability of b occurring is 1/4. what is p(a and b)?

Adele is five years older than timothy. in three years, timothy will be 2/3 of adele’s age. what is adele‘s current age?

How can you find the magnitude of a vector, v = < x, y > , where the horizontal change is x and the vertical change is y?