the sets s1= (15, 9, 20,7) and s2 =(6,11,5,4) both have one or more numbers over 10
If one number from S1 and one number from s2 are selected randomly, what is the probability that the set selected will have one number over 10 and one number under 10?
i get that 4*4 would be the total possible outcomes, but i do not understand how to arrive at the possible outcomes. Is it using a combination or permutation. The explanation in the exam was too vague and unclear and actually seems wrong. Please help me understand how to arrive at the numerator value thanks.