If the ages of P and R are added to twice the age of Q, the total becomes 59. If the ages Q and R are added to thrice the age of P, the total become 68. And, if the age of P is added to thrice the age of Q and twice the age of R, the total becomes 91. What is the age of P?
If 2x + 3x + z = 25, x + y + z = 14 and x + y = z. Then what is the value of x?
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Which one of the following conditions must p, q and r satisfy so that the following system of linear simultaneous equations has at least one solution, such that p + q + r ≠ 0
x + 2y - 3z = p
2x + 6y - 11z = q
x - 2y + 7z = r
In the given questions two equations numbered I and II are given. You have to solve both the equations and give answer.
I. 2x2 - 7x + 3 = 0
II. 2y2 - 7y + 6 = 0
A rectangular sheet of paper, when halved by folding it at the mid point of its longer side, results in a rectangle whose longer and shorter sides are in the same proportion as the longer and shorter sides of the original rectangle. If the shorter side of the original rectangle is 2, what is the area of the smaller rectangle ?
Consider two different cloth-cutting processes. In the first one, n circular cloth pieces are cut from a square cloth piece of side a in the following steps : the original square of side a is divided into n smaller squares, not necessarily of the same size; then a circle of maximum possible area is cut from each of the smaller squares. In the second process, only one circle of maximum possible area is cut from the square of side a and the process ends there. The cloth pieces remaining after cutting the circles are scrapped in both the processes. The ratio of the total area of scrap cloth generated in the former to that in the latter is
The average of five continuous even numbers is 26. The quarter of the sum of highest and lowest number is .....
In the given figure, AB is diameter of the circle and points C and D are on the circumference such that ∠CAD = 30°and ∠CBA = 70°. What is the measure of ∠ACD?
What is the distance in cm between two parallel chords of lengths 32 cm and 24 cm in a circle of radius 20 cm ?
If x, xy, xy2 are the sides of a triangle, where x and y are real numbers and y≥1y≥1, then which of the following is the value that y cannot take?
A man invests Rs. 3000 at the rate of 5% per annum. How much more should he invest at the rate of 8%, so that he can earn a total of 6% per annum?
The real number x when added to its inverse gives the minimum value of the sum at x equal to
A zookeeper counted the heads of the animals in a zoo and found it to be 80. When he counted the legs of the animals he found it to be 260. If the zoo had either pigeons or horses, how many horses were there in the zoo?
There are 50 integers a1, a2,....,a50, not all of them neccessarily different. Let the greatest integer of these 50 integers be referred to as G, and the smallest integer be referred to as L. The integers a1 through a24form sequence S1, and the rest form sequence S2. Each member of S1 is less than or equal to each member of S2.
Q. All values in S1 are changed in sign, while those in S2 remain unchanged. Which of the following statements is true ?
There are 50 integers a1, a2,....,a50, not all of them neccessarily different. Let the greatest integer of these 50 integers be referred to as G, and the smallest integer be referred to as L. The integers a1 through a24form sequence S1, and the rest form sequence S2. Each member of S1 is less than or equal to each member of S2.
Q. Elements of S1 are in ascending order, and those of S2 are in descending order. a24 and a25 are interchanged then which of the following statements is true ?
There are 50 integers a1, a2,....,a50, not all of them neccessarily different. Let the greatest integer of these 50 integers be referred to as G, and the smallest integer be referred to as L. The integers a1 through a24form sequence S1, and the rest form sequence S2. Each member of S1 is less than or equal to each member of S2.
Q. Every element of S1 is made greater than or equal to every element of S2 by adding to each element of S1 a integer x. Then, x cannot be less than :
It is given that 5% increase in X always means 3% increase in Y and 5% increase in Y always impliies 2.5% increase in Z.
Q. Relationship between X and Z could be
There are three boxes, each of which has an equal number of red, blue as well as green balls in it. Now an equal number of balls are drawn from each box. What is the minimum number of balls that have to be drawn from each box to ensure that at least three similarly colored balls are obtained ?
In a room there are 7 persons. The chance that two of them were born on the same day of the week is
A merchant buys two articles for Rs.600. He sells one of them at a profit of 22% and the other at a loss of 8% and makes no profit or loss in the end. What is the selling price of the article that he sold at a loss?
For all 'x', x²+2ax+(10-3a)>0, then the interval in which 'a' lies is
In a kilometre race, A can give B a start of 100 m or 15 seconds. How long does A take to complete the race?
Sweta, Swarna, Sneha and Soumya and four sisters who have an agreements that they share all snaks among themselves. One day, uncle Prem gave a box of cookies of Sweta. Since the other sisters were not around. Swetha divided the cookies into four parts, ate her share and put the rest into the box. As she was closing the box. Swarna came in. She took all the cookies from the box and divided them into four equal parts. Sweta and Swarna ate one part each and put the rest in the box. Just then, Sneha walked in. She took all the cookies from the box, divided them into four equal parts. The three of them ate their respective shares and put the rest into the box. Later, when Soumya came, she divided all the cookies into four equal parts and all four sisters are their respectives shares. In total, Soumya ate 3 cookies.
Q. How many cookies, in total, did Sneha eat?
What is the sum of 'n' terms in the series : log m + log(m2/n) + log(m3/n2) + log(m4/n3) + ....
Ram and Shyam attempted to solve a quadratic equation. Ram made a mistake in writing down the constant term. He ended up with the roots (4, 3). Shyam made a mistake in writing down the coefficient of x. He got the root as (3, 2). What will be the exact roots of the original quadratic equation?
Two friends, Sachin and Sourav, with speeds of 20m/s and 15m/s respectively are chasing a thief who is running away from them with the speed of 10m/s. After sometime Sachin observed that Sourav has been left behind so he reduced his speed to 15m/s and at the same instant Sourav increased his speed to 20m/s. If, after two minutes of this, both of them caught thief, then find the initial distance between them and the thief. It is given that they started chasing from the same point at the same time.
5 videos|378 docs|164 tests
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5 videos|378 docs|164 tests
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