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Simplify: (x^b / x^c)^(b+c) * (x^c / x^a)^(c+a) * (x^a / x^b)^(a+b).
A0
B1
Cx
Dx^(a+b+c)
The average age of a family of 5 members is 20 years. The age of the youngest member is 4 years. What was the average age of the family at the birth of the youngest member?
A16 years
B18 years
C20 years
D22 years
A boat travels 24 km upstream and 36 km downstream in 6 hours. If the speed of the stream is 2 km/h, find the speed of the boat in still water.
A8 km/h
B10 km/h
C12 km/h
D14 km/h
The area of a square is equal to the area of a circle with radius 7 cm. Find the side of the square. (Use pi = 22/7)
A11 cm
B12.41 cm
C14 cm
D15.4 cm
If 16 men can complete a project in 15 days, how many men are needed to complete the project in 10 days?
A20
B22
C24
D26
Two dice are thrown together. What is the probability that the sum of the numbers on the top faces is divisible by 5?
A1/6
B7/36
C2/9
D5/36
Simplify: (0.87 * 0.87 * 0.87 + 0.13 * 0.13 * 0.13) / (0.87 * 0.87 – 0.87 * 0.13 + 0.13 * 0.13).
A0.74
B0.87
C1.00
D1.13