[Official] Quant Thread for 2015!

There are N boxes, each containing at the most, k balls. If the number of boxes containing at least j balls is Nj for j = 1, 2, 3, ... k, then the total number of balls contained in these N boxes is ? 

Please explain the solution. Also where should we practise such questions from for CAT?

Dear readers,

General knowledge is extremely important for MBA aspirants. While questions from logical reasoning and quantitative analysis can be time-consuming, the GK section can help you increase your scores quickly.

Accordingly, we hereby present weekly GK quizzes for your practice. These quizzes would help you prepare comprehensively for your upcoming MBA entrance tests.

You can go through the first two quizzes at the following links:

Link 1

Link 2

All the Best!

If Lovely decreases her speed by 10 kmph, the duration of the journey increases by 40 hours. If she increases her speed by 5 kmph, the duration decreases by 10 hours. Find the distance covered.

how can we post geometry questions heree!!!!

Abhinav travels from Mumbai to Bangalore. He started at 6 am and reached at 10 am. Praveen leaves Bnagalore at 8 am and reaches Mumbai at 11.30 am. Find the time when they crossed each other.

Any shortcut approach fr this question:

Rajiv lent out Rs 9 to Anni on condition that the amount is payable in 10 months by equal instalments of Re.1 each payable at the start of every month.what is the rate of interest per annum if the first instalment has to be paid one month from the date the loan is availed? Ans is 2.222%

ABC is an isosceles triangle. If AB = AC = 16 and AD is any line and equals 12.How many triangles can be drawn such that such that BD & DC are integers???

The empty weight of a jar is 20 percent of its weight when its completely filled with water. if some water is taken out the weight of a jar is 40 percent of its weight when its completely full. how much water was taken out (any simple way to solve this)

A boat goes downstream 120 km and then upstream 120 in 15 hours total. Had the speed of stream been twice high. It would have taken 24 hours total. Find the speed of oat in still water.

Do post if you have any short method to solve.

A boat takes 7 hours to go from P to R through a midpoint Q. It takes 8 hours to go from P to Q to P. How long would it take to go from R to P.

In a 1000 m race, Ravi gives Vinod a start of 40 m and beats him by 19 seconds. If Ravi gives a start of 30 seconds, Vinod beats him y 40 m. What is the ratio of speed of Ravi to Vinod?

Guys is time website down?

Total interest obtained on a sum of rs 8000 for 3 years at 3% rate on interest pa if calculated semiannually is? tedious calculation pls help


How many integer values of x and y are there such that 4x + 7y = 3  where mod x and mod y have values less than 500

Value of a diamond depends on its surface area. If a cuboid diamond is cut by 4 thieves so that it is divided equally among them. Find the maximum percentage increase in its price.

The altitudes made on 3 sides of a triangle are in the ratio = 2:3:4. Find the ratio of corresponding sides.

1! +2!+3!+....10!=?

Find the value of k for which the equations x2 - kx - 21 = 0 and x2 - 3kx + 35 = 0 have one common root.

If x2 + 2(p+1)x + 9p-5 = 0 has only negative real roots. Find the minimum value p can have.

If a, b, c are the roots of the equation, x3 - 3x +11 = 0. Find the coefficient of x in the equation having roots  as a+b, b+c, and c+a.