john bought a full basket of mangoes when he got home he realised 12 out of the 20 mangoes he bought are bad what is the probability of the good ones

a) t'(-3, 6) and v'(0, 3)  

step-by-step explanation:

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right