A, B, C, D, E, F, G, and H are standing in a row facing North.

1. B is not the neighbor of G.
2. F is to the immediate right of G and the neighbor of E.
3. G is not at the extreme end.
4. A is sixth to the left of E.
5. H is sixth to the right of C.

Which one of the following is correct in respect of the above?

A bag contains 20 balls: 8 balls are green, 7 are white, and 5 are red. What is the minimum number of balls that must be picked up from the bag blindfolded (without replacing any of them) to be assured of picking at least one ball of each color?

Mean $<$ Median $<$ Mode, then the distribution is

The sum of income of A and B is more than that of C and D taken together. The sum of income of A and C is the same as that of B and D taken together. Moreover, A earns half as much as the sum of the income of B and D. Whose income is the highest?

If second and fourth Saturdays and all the Sundays are taken as only holidays for an office, what would be the minimum number of possible working days of any month of any year?

Consider the following:

1. A + B means A is the son of B.
2. A – B means A is the wife of B.

What does the expression $P + R – Q$ mean?