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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

The Correct Answer
Explanation

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

(A) (B) (C) (D) (E)

Correct Answer: 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

Correct Answer: J

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

Correct Answer: G

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