mindtree placement papers - skillgun
A cylinder of height 5 cm and diameter 6 cm have been converted into certain number of same size spheres. Find the radius of the sphere.?
Volume of cylinder = 22/7 x 32 x 5 Assume r is the radius of the sphere
volume of one sphere = 4/3 x 22/7 x r3 If number of spheres are n then n x 4/3 x 22/7 x r3 = 22/7 x 9 x 5
n x r3 = 9 x 5 x 3/4
We form the perfect cube so that we multiply and divide by 2 on Right side
n x r3 = 9 x 10 x 3/8
n x r3 = 10 x (3/2)3 n is 10 and r is 1.5 cm
A Shop owner sold 350 candles for 1500.What will be the approximate rate of 10 dozens of such candles ?
By given information 350 candle are Rs.1500 and 10 dozen candle means 10 *12 =120 then 120 candles are 120/350 * 1500 = 514.30
In a college A Mathematics lecturer asked a Question to students that "A square of a number is divided into two unequal parts such that 4 times the difference of them is equal to the difference of their individual squares". find the number ?
Assume the number be x
Then the square of the number = x2. Assume the two unequal parts be a and b.
Then a + b = x2
4 times the difference of them = 4(a - b)
And the difference of their individual squares = a2 - b2.
4(a - b) = a2 - b2.
4(a - b) = (a - b)(a + b)
4 = (a + b)
16 = x2 (by a + b = x2)
x = 2
Ramesh and Rajesh can type two pages in two minuets then how many persons can type 18 pages in 6 minuets ?
Here 2 workers do 2 pages in 2min then 6 workers do 18 pages in 6 min i.e 6+6+6=18
If Aaron is 25 kms east of Bharghav, which is 12 kms south of Chandra, which is 9 kms west of Deepak.Calculate the distance of the point from Aaron to Deepak.?
Here by drawing the Diagram the calculation is using pythogorous theorem like (12)2+(16)2 = 400 i.e 20
Rahul started from his home to office and Walking at 3/7th of his usual speed,He is 20 mins too late. His usual time is ?
How many number of weights do you need to weight 31 kg of rice if you have only one 1kg weights stone ?
We need 30 kg because we already have 1 kg
In a class boys are 25% more than girls what is ratio of total boys and girls ?
If girls are 100 in a class then boys are 125.so 125:100 =>5:4
Total Sixty-three matches are conducted in Knock out match type.How many players will be participated in that tournament?
How many three digit number are there when divided by Seven or Eight leaves remainder 4?
Pomogranate are arranged in the order of 10,9,8,7,6,5,4,3,2.Hence he got shortage of 1.What is the minimum number of smallest Pomogranate?
Lcm of the numbers-1
Fresh Pomogranates have 70% of water in weight,dry Pomogranates 20% of water in weight.What is the weight of the dry Pomogranates if weight of fresh Pomogranates is 20 kg.?
Can't be determined
Count the numbers between 100 and 300, that starts with 2 and ends with 2 ?
In a class room one got 20% marks and failed by 10 marks, other got 42% marks and got 12 % more than the passing requirement What is the maximum marks ?
In a Population recorded time the family person noticed that a year ago,Father was four times his son’s age. In six years his age will be 9 more than twice his son’s age. What is the present age of the son?
The son's age is 9 years
In a shop Saritha wants to select a cotton saree and one polyester saree from a textile shop. If there are 10 cotton varieties and 12 polyester varieties, in how many ways can she choose the two sarees?
Here saritha choose in 120 ways because 12 * 10=120
Sai is 3 times as efficient as Bala, then the ratio of number of days required by each to work alone, completely?
Here The ratio of the working days from sai to bala is 1:3
What is the relation with Uma’s sister’s brother’s wife’s child with you.?
Rani’s husband’s father-in-laws son’s child.what is the relation?
Which of the following combinations is not correct?
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