Question : If the average of $s$ numbers is $r^4$ and the average of $r$ numbers is $s^4$, then find the average of all $r+s$ numbers.

Option 1: $r s\left(r^2+s^2-r s\right)$

Option 2: $rs$

Option 3: ${r}^2+s^2$

Option 4: $rs\left(r^2+s^2\right)$

Question : Directions: Select the option that represents the letters that, when placed from left to right in the blanks below, will complete the letter series.
P _ R R _ P Q _ _ S _ Q R _ S P _ R R S

Option 1: R Q P Q R S Q

Option 2: S Q R R Q P R

Option 3: S Q Q R R P Q

Option 4: Q S R R P R Q