Read the following three equations:
5 ~ 4 ~ 3 ~ 9 = 4215
6 ~ 9 ~ 2 ~ 6 = 3816
4 ~ 7 ~ 3 ~ 3 = 1122
Now based on the rule that has been used, solve the following equation:
5 ~ 2 ~ 7 ~ 4 = ____
Choose the correct choice from the following.
A) 2410  B) 2910  C) 2940  D) 3749  E) 4470
2410   2410   2410   The rule that is being followed here is   P ~ Q ~ R ~ S = [first digit of (P * S)] [last digit of (Q * R)] [first digit of (Q * R)] [last digit of (P * S)]   Using the same rule in the incomplete equation,   5 ~ 2 ~ 7 ~ 4 = [first digit of (5 * 4)] [last digit of (2 * 7)] [first digit of (2 * 7)] [last digit of (5 * 4)]   = 2410   Thus 2410 is the missing number.
<result>A</result>
Read the following three equations:
5 ~ 4 ~ 3 ~ 9 = 4215
6 ~ 9 ~ 2 ~ 6 = 3816
4 ~ 7 ~ 3 ~ 3 = 1122
Now based on the rule that has been used, solve the following equation:
5 ~ 2 ~ 7 ~ 4 = ____