Find the theoretical probability of picking three even numbers in a row from the tiles without replacement

Writing the simplest form of a fraction means the numerator and the denominator have no common factors other than 1.a. trueb. false

Pick the expression that matches this description: a polynomial of the 5th degree with a leading coefficient of 7 and a constant term of 6 (choice a) 7x^5+2x^2+6 (choice b) 7x^6−6x^4+5 (choice c) 6x^7−x^5+5 (choice d) 6x^5+x^4+7

We just started the introduction into circles and i have no idea how to do this.