Solve the problem.How many 5-digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6, if repetitions are not allowed?
A. 2160
B. 119
C. 16,807
D. 120
Answer: A
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Solve the problem.The equivalent resistance R? of the resistors R1 and R2 in parallel is given by 
If 
and 
find R1 and R2.
A. 22.0?; 0.94? B. 26.96?; 1.04? C. 5.08?; 1.02? D. 3.29?; 2.32?
Solve the problem.A 50-m-long, 8.6-mm-diameter rope hangs free from a ledge. The density of the rope is 70 g/m. How much work is needed to pull the entire rope to the ledge?
A. 87,500g J B. 3.5g J C. 87.5g J D. 6.25g J
Determine whether the players have equal probabilities of winning.Draw a card from a regular deck. If a spade is drawn, player 1 wins; if a diamond is drawn, player 2 wins; otherwise player 3 wins.
A. Yes B. No
Use set notation, and list all the elements of the set.{82, 77, 72, . . ., 32}
A. {82, 77, 72, 62, 52, 42, 32} B. {82, 77, 72, 67, 62, 57, 52, 47, 42, 37, 32} C. {82, 87, 92, 97, 102, 107, 112, 117, 122, 127, 132} D. {82, 77, 72, 66, 61, 56, 51, 46, 41, 36, 31}