Question 149995
the number of ways to select 4 funds out of 10 is 10C4 or 210


the number of ways to select 3 funds out of 6 is 6C3 or 20


the number of ways to have 3 good funds with 1 poor fund is 20*6 or 120


so the probability of 3 out of 4 funds being good is 120/210 or 4/7