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The length of one diagonal of a rhombus is 80% of the other diagonal. The area of the rhombus is how many times the square of the length of the longer diagonal?
Let length of the longer diagonal = x cm
Then, length of other diagonal
x (Square of the length of longer diagonal)
BaCl_{2} + ZnSO_{4} → ZnCl_{2} + BaSO_{4}, the white precipitate seen is due to
Dravid invested Rs. 30,000 in a finance company and received Rs. 39,930 after 1 1 2 years. Find the rate of interest per annum compounded semiannually.
How many visitors saw the exhibition yesterday ?
I. Each entry pass holder can take up to three persons with him/her.
II. In all, 243 passes were sold yesterday.
The question given above has a problem and two statements giving certain information. You have to decide if the information given in the statements is sufficient for answering the problem. Indicate your answer as
From I and II, we find that maximum (243 x 3) i.e. 729 visitors saw the exhibition.
But the exact number cannot be determined.
If (x + 2) (x  5) (x  6) (x  1) = 144, then the values of x are:
[(x−6) (x+2)] [(x−5)(x+1)] = 144
(x2−4x−12 (x^{2}−4x−5) = 144
Letx^{2 }− 4x = y
(y−12) (y−5) = 144
What is the momentum of a man of mass 75 kg when he walks with a uniform velocity of 2m/s?
Given : m = 75 kg
v = 2m/s
p = ?
we know that momentum p = m x v
∴ p = 75 x 2
= 150 kg m/s.
Study the following diagram :
The value of (x + y) is
56 = 8 x 7
x = 6x 7 = 42
∴ y = 8 x 42 = 336
∴ x + y = 336 + 42 = 378
If x stands for 'addition', ÷ stands for 'subtraction', + stands for 'multiplication' and  stands for 'division', then
20 x 8 ÷ 8  4 + 2 = ?
Given expression : 20 + 8  8 ÷ 4 x 2 = 20 + 8  2 x 2 = 20 + 8  4 = 24
A pipe of diameter d can drain a certain water tank in 40 minutes. The time taken by a pipe of diameter 2d for doing the same job is
Ratio of volumes =
∴ A pipe of radius d/2 can drain a water tank in 40 minutes
⇒ A pipe of radius d can drain the same water tank in 10 minutes
If √15 = 3.88, then what is the value of
A train can travel 50% faster than a car. Both start from point A at the same time and reach point B 75 kms away from A at the same time. On the way, however, the train lost about 12.5 minutes while stopping at the stations. The speed of the car is :
Let speed of the car be x kmph.
The cost of painting the whole surface area of a cube at the rate of 13 paise per sq. cm is Rs. 343.98. Then the volume of the cube is :
A,B,C,D,E,F and G are seven kids playing in the garden. They are wearing a clothes of colours  black, blue, white, green, pink, yellow and brown. Out of the seven, three are girls. No girl is wearing either black, yellow or brown. D's sister F is wearing pink while he is wearing brown. A is wearing blue, while his sister B is not wearing green. E is wearing yellow, while his best friend G is a boy.
What colour is B wearing?
A,B,C,D,E,F and G are seven kids playing in the garden. They are wearing a clothes of colours  black, blue, white, green, pink, yellow and brown. Out of the seven, three are girls. No girl is wearing either black, yellow or brown. D's sister F is wearing pink while he is wearing brown. A is wearing blue, while his sister B is not wearing green. E is wearing yellow, while his best friend G is a boy.
What colour is G wearing?
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