Solve the problem.The Tasmanian House of Representatives has 435 members. A set of 3 leaders - a Speaker, a Whip, and a Secretary - must be selected. How many different sets of leaders can be selected?
A. 435 × 434 × 433
B. 4353
C. 3435
D. 
E. none of these
Answer: A
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Solve the problem.A tank contains 100 gal of fresh water. A solution containing 2 lb/gal of soluble lawn fertilizer runs into the tank at the rate of 1 gal/min, and the mixture is pumped out of the tank at the rate of 
Find the maximum amount of fertilizer in the tank and the time required to reach the maximum.
A. 50 pounds, 50 minutes B. 48 pounds, 60 minutes C. 48 pounds, 40 minutes D. 60 pounds, 40 minutes
Perform the indicated operation(s). Simplify if possible.- 
- 
A. 
B. 
C. 
D. 
If the number in the statement is written in scientific notation, write it without exponents. If it is written without exponents, write it in scientific notation.The life span of the average male human being is approximately 37,843,200 minutes.
A. 3.78432 × 105 min B. 3.78432 × 107 min C. 3.78432 × 106 min D. 37.8432 × 106 min
Solve the problem.Two pipes can be used to fill a pool. Working together, the two pipes can fill the pool in 
The larger pipe can fill the pool in 5 hours less time than the smaller pipe can alone. Find the time to the nearest tenth of an hour it takes for the smaller pipe working alone to fill the pool.
A. 2.8 hours B. 7.7 hours C. 7.8 hours D. 2.7 hours