In a survey concerning the smoking habits of consumer it was found that 55% smoke cigarette A, 50% smoke cigarette B, 40% smoke cigarette C, 30% smoke cigarettes A and B, 20% smoke cigarettes A and C, 12% smoke cigarettes B and C only 10% all three cigare
4 years 10 months ago
How many 3-digit numbers greater than 300 can be made out from digits 0, 1, 2, 3, 4, 5, and 6 if repetition of digit is not allowed?
4 years 10 months ago
What time after 3:00 o’clock would the hour-hand and the minute-hand of a continuously driven clock subtends an angle of 45° for the second time?
4 years 10 months ago
A tugboat traveling at 40 kph leaves port at 4 PM carrying off some contraband goods. A patrol boat assigned to stop the goods leaves the same post an hour later and drove at 90 kph. What time will the patrol boat overtake the tugboat?
4 years 10 months ago
Car A drives East at 20 kph at half an hour earlier than car B that started at the same point at 50 kph. How long will car B overtake car A, in minutes?
4 years 10 months ago
If it were two hours later, it would be half as long until midnight as it would be if it were an hour later. What time is it now?
4 years 10 months ago
Solve for C from the Partial Fraction
4 years 10 months ago
Find d so that x + 6 is a factor of x4 + 4x3 - 21x2 + dx + 108.
4 years 10 months ago
A student in a chemistry laboratory wants to form a 32-milliliter mixture of two solutions to contain 30% acid. Solution A contains 42% acid and solution B contains 18% acid. How many milliliters of each solution must be used?
4 years 10 months ago
If 1/4 of a mixture of rice and corn was replaced by corn alone, the resulting mixture becomes 55% corn. What was the percentage of corn in the original mixture?
4 years 10 months ago
$\sqrt[m]{\sqrt[n]{x}}$ could be express as...
4 years 10 months ago
Three boys and two girls are to be picked from a class of 15 in which 9 are girls. How many ways can this be done?
4 years 10 months ago
Quiz: Random Problems Set 6
4 years 10 months ago
Differential equation: $(x+2y-1)dx-(x+2y-5)dy=0$
4 years 10 months ago
Differential equation
4 years 10 months ago
Work problems
4 years 10 months ago
Constant Area of Triangle ABC
4 years 10 months ago
Solid mensuration
4 years 10 months ago
diff eqn
4 years 10 months ago
Power Functions
4 years 10 months ago
trigonometry
4 years 10 months ago
Circles
4 years 11 months ago
Circle
4 years 11 months ago
Will you please be more specific in doing with calculations
4 years 11 months ago
Stresses of Hollow Circular Tube Used as a Pole
5 years 2 months ago
Hollow Circular Beam with Known Cracking Moment
5 years 3 months ago
Centripetal Force of a Ball Revolving Uniformly in a Horizontal Circle
5 years 7 months ago
Sum of Areas of Infinite Number of Squares
5 years 7 months ago
Radius of Circle of New Atom Smasher
5 years 7 months ago
Sum of Areas of Equilateral Triangles Inscribed in Circles
5 years 7 months ago
Time After 7:00 O'clock When The Minute & Hour Hands Of The Clock Are Together
5 years 7 months ago
Ratio of Volume of Water to Volume of Conical Tank
5 years 7 months ago
Finding The Length Of Parabolic Curve Given Change In Grade Per Station
5 years 7 months ago
Find y’ if x = 2 arccos 2t and y = 4 arcsin 2t
5 years 7 months ago
Probability That A Randomly Selected Chord Exceeds The Length Of The Radius Of Circle
5 years 8 months ago
Regular Octagon Made By Cutting Equal Triangles Out From The Corners Of A Square
5 years 8 months ago
The Hour Hand And Minute Hand Of The Clock Exchanged Places
5 years 8 months ago
Time After 3:00 O'clock When The Hands Of The Clock Are Perpendicular
5 years 8 months ago
Smallest Part From The Circle That Was Divided Into Four Parts By Perpendicular Chords
5 years 8 months ago
Continuous Beam With Equal Support Reactions
5 years 8 months ago
Probability that a Point Inside a Square Will Subtend an Obtuse Angle to Adjacent Corners of the Square
5 years 8 months ago
Continuous Beam With a Gap and a Zero Moment in Interior Support
5 years 8 months ago
Probability that a Large Shipment is Accepted or Not Accepted due to Defective Items
5 years 8 months ago
1 - Probability for cars to pass through a point on road in a 5-minute period
5 years 8 months ago
Three Men Shoot and Only One of Them Hits the Target. Find the Probability that it was the First Man
5 years 9 months ago
Poisson Probability Distribution
5 years 9 months ago
Probability: A Family of Five Children
5 years 9 months ago
09 - Number of Leaps to Take to Catch the Lead
5 years 9 months ago
Number of Steps in the Escalator
5 years 9 months ago
Poker Hand: Probability that Five Cards are of the Same Suit
5 years 9 months ago