Pinexam——There is royal road to learning.

## If the least common multiple of 9, 10, 12, and vis 540, which of the following could be v?

(A) 18

(B) 24

(C) 27

(D) 36

(E) 45

Explanation

If z ≠ 4 and z ≠ -4, then which of the following is equivalent to the expression

（A） （B） （C） （D） （E）

A school offered its students an optional field trip. If 15 or fewer students went on the field trip, the charge for each student would be \$11.50. If more than 15 students chose to go on the field trip, the charge for each student would be \$10.25. 18 students opted to go on the tour, but each pre-paid \$11.50. The students agreed to put the extra amount toward dinner on the trip. How much total money will be put toward dinner on the trip?

(F) \$12.50(G) \$14.75(H) \$21.75(J) \$22.50(K) \$33.00

The minutes and seconds on a 60-minute digital timer are represented by 3 or 4 digits. What is the largest product that can be obtained by multiplying the digits in one of these representations?

(Note: When the timer displays 16:15, the product of the digits is (1)(6)(1)(5) = 30.)

(F) 90

(G) 2,025

(H) 3,481

(J) 3,600

(K) 6,561