The probability a red marble selected at random from a jar containing p red, q blue and r green marbles is (1) q/(p + q + r)

Question

The probability a red marble selected at random from a jar containing p red, q blue and r green marbles is

(1) \(\frac{q}{p\,+\,q\,+\,r}\) 

(2) \(\frac{p}{p\,+\,q\,+\,r}\)

(3) \(\frac{p\,+\,q}{p\,+\,q\,+\,r}\)

(4) \(\frac{p\,+\,r}{p\,+\,q\,+\,r}\)

Answer 1

(2) \(\frac{p}{p\,+\,q\,+\,r}\)