if you pick randomly from 4 card with the numbers 5678 what is the probability that you will get the card numbered 7

Acoin is tossed twice. let e e be the event "the first toss shows heads" and f f the event "the second toss shows heads". (a) are the events e e and f f independent? input yes or no here: yes (b) find the probability of showing heads on both toss. input your answer here: preview

Given that (x-3) is a factor of f(x)=x^3+ax^2-x-6, find a and hence the number of real roots or the equation f(x)=0

To which set of numbers does the number –5 belong? select all that apply. integers natural numbers rational numbers real numbers whole numbers