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VOLUNTEER TRAINING FOR DISADVANTAGED IN MATHS – QUESTION 15 : A motel cleaner has 8 master keys at home to open all the rooms in a large motel. Each room can be opened by just 1 of these keys. If 40 % of the rooms are left unlocked, what is the probability that the cleaner can get into a specific room if he selects 3 keys at random before leaving home to go to work? (A) 5 / 8, (B) 5 / 16, (C) 31 / 40, (D) 3 / 20, (E) 19 / 40.
1 1825VOLUNTEER TRAINING FOR DISADVANTAGED IN MATHS – QUESTION 16 : A committee of 6 people is to be chosen from 8 students and 6 teachers so that it contains at least 3 students and at least 2 teachers. The number of ways this can be done is – (A) 1050, (B) 1120, (C) 7560, (D) 840, (E) 2170.
1 8993the perimetere of a square is 44m more than that of another and 187 sqm more in area then the side of the larger square is
1055The pipes can fill a cistern in 1.5 hours and 2 hours respectively. A wste pipe can empty a full cistern in 3 hours. If the cisternis empty and all three pipes are opened together, in how many min will the cistern be half full
1358the ages of two brothers are now in the ratio 4:3 but fifteen years ago, they were in the ratio 3:2the present age are
948if the price of orange falls by 20 % one can buy 5 dozens more for RS 300, then the original price per dozen is
1226P and Q are positive integers with their averagfe 15, find how many different values can one take
1031a spere circumscribes a cylinder . then the ratio of the surface area of the spere to the curved surface area of the cylinder is
1134Post New Mathematics Questions
What types of math do you use? Re: calculus, algebra, fractions?
State and prove Taylor's theorem for f(x,y)
What is the square root of 256?
Explain the scope of Mathematics in the development of India in the 21st century.
Explain the concept of experiential learning in Mathematics.
what is the radius of the circle 4x**2+4y**2 =100
Explain the Lagrange's method of undetermined multipliers to find extreme values of the function f (x,y,z).
if the length of the cycloid is 4 times the diameter of a rotating circle, then the area under the arch traced out by that cycloid is how many times the area of therotating circle?
find 842.8 +602=
can i get model papers for the interview for the post of scientist/engineer'SC' at isro
State Euler's theorem for the homogenous function f(x,y) with degree n.
Define homogenous function of x and y with degree n.
How many degrees are there in o radians?
limit x->Â¥ [(x+6)/(x-1)][(x+6)/(x-1)]
In a normal distribution, approximately what percentage of the cases, to the nearest whole number, falls within 4 standard deviations of the mean.
