[Official] Quant Thread for 2015!

There is an increasing sequence of positive integers, a(n+1) = a(n+2) - a(n )for all ≥1, where an denotes the nth term of the sequence.

If the 7th term of this sequence is 120, what is the 9th term of this sequence?

There are eight friends: four boys and four girls. Sheldon, Leonard, Raj and Howard are the boys and Penny, Bernadette, Amy and Leslie are the girls. All of them are sitting around a rectangular table having eight different chairs (chairs cannot be moved) such that there are three seats along each longer side and one seat each on the shorter sides. Sheldon, being the leader, likes to sit on the shorter side of the table. Raj does not talk to girls, so he does not sit next to any of the girls. Leslie wants to sit opposite Sheldon. Friends whose names start with the same letter do not sit adjacent to each other. In how many ways can these eight friends be arranged, if they face each other?

@Highway66 

There is a 8*8 matrix. In how many ways 6 identical balls can be arranged in such a way that 

after arranging the balls, the number of empty cells in each row and column of the board is even.

Puys IMS vs. Testfunda..? Which one is the best for good level questions in verbal and LR..?

Please help me puys in selecting the best one....i need ur help a lot in choosing the right material....

item   fee per session    annual budget          amount spent

                                                                            jan-mar   april-jun

yoga         24                     1200                          240          360

gym          15                       700                           180           135

swimming 25                     1000                         150             100

according to table answer the question

1.if the total budget for three activities is reduced by 20%,what is the total amount left in the annual budget to be spend by the end of the year?

2.if it is planned to use the whole budget for gym workouts by the end of this year how many more times the gym can be visited?

can't  undrstand how to solve these two? plz help puyz

The leftmost digit of an integer of length 2000 is 3. In this integer any two consecutive digits must be divisible by 17 or 23. The 2000th digit may be x or y. What is then value of x+y?

N is a natural no. having 4 factors.If the sum of its factors excluding the no. itself is 31.find the no.?

don't know the OA.kindly explain ur answers.

How is online classes Hunda Ka Funda? Is its video is better for cat? Also give some suggestion about Pt's videos. plz suggest..

Find the sum of all the even factors of 2^5 * 3^5 * 5^4.

OA 17625608.kindly explain

Three brothers - A, B and C - have distinct integral ages less than 100. They never prefer giving out anyone's age directly but modify the age as per a fixed pattern. One brother halves the number, another squares the number and the third reverses the digits. They were asked about their respective ages. 
First, the oldest whispered his age to the thinnest, who whispered it to C, who whispered it to the youngest, who finally answered 27.
Then, the youngest whispered his age to the tallest, who whispered it to B, who whispered it to the shortest, who answered 23.
Finally, the youngest whispered his age to the shortest, who whispered it to the thinnest, who whispered it to A, who answered 16.
What are the ages of the three brothers?

@Highway66 @amod24 @placiddisciple @UTTAM_NARAYAN 

Kindly help in the approach for solving this question:

N has f factors, 2N has 2f factors, 6N has 4f factors, 15N has 3f factors. How many factors does 30N has?

Arjun went to a market to buy apples, bananas and oranges. He bought an equal number of bananas and oranges and twice as many apples as oranges. The sum of the prices of 1 apple, 1 banana and 1 orange is Rs.12. If the cost of each orange was equal to the actual price of an apple, the other prices remaining the same, he would have just been able to buy as many apples and oranges that he actually bought but would have had no money left over to buy any bananas. If he purchased 60 fruits on the whole, find the expenditure he incurred on apples. a)Rs.180 b)Rs.240 c)Rs.60 d)Rs.120


What is the value of f(x + y) + f(x − y), if

f(x) = (a^x + a^-x)/4

Assume a > 0

The class X of Vidyaniketan School has four sections - A, B, C and D. The average weights of the students of A, B, C together and A, C, D together are 45 kg and 55 kg respectively, while the average weight the students of A, B, D together and B, C, D together are 50 kg and 60 kg respectively. Which of the following could be the average weight of the students of all the four sections together? a)47.6 kg b)49.9 kg c)53.7 kg d)56.5 kg

Three circles touch each other externally. The tangents at their point of contact meet at a point whose distance from any point is 4. Find the ratio of product of radii to sum of radii of circles 

X=20sin@+5

Y=-10cos@-4

Which of the following best describes the image made by the graph of these equations in the x-y plane??...

Plz explain

A watch gains by 2% per hour when the temperature is in the range of 40-50 degree celsius and it loses at the same rate when the temperature is in the range of 20-30 degree celsius. However the watch owner is fortunate since it runs on time in all other temperature ranges. On a sunny day, the temperature started soaring up from 8 am in the morning at uniform rate of 2 degree celsius per hour and sometime during the afternoon it started coming down at the same rate. Find what time will it be by the watch at 7 pm if at 8 am the temperature was 32 degree celsius and at 4 pm, it was 40 degree celsius.  

         A. 6:55 pm.     B. 6:55:12 pm.           C. 6:55:24 pm. D. None of these 

Any way to solve this one without working back from options (as recommended in the solution)?

Doctors have advised Renu, a chocolate freak, not to take more than 20 chocolates in one day. When she went to the market to buy her daily quota, he found that if she buys chocolates from the market complex she has to pay Rs. 3 more for the same number of chocolates than she would have spent had she bought them from her uncle Scrooge's shop, getting two sweets less per rupee. She finally decided to get the from Uncle Scrooge's shop paying only in one rupee coins. How many chocolates did she buy?


Without any stopage, a person travels a
certain speed at an average speed of 80km/h,
and with stoppages he covers the same
distance at an avg speed of 60km/h. How
many minutes per hour does he stop?A.20b.30c.10d.NOTA

Pls discuss the approach in comments!

A shopkeeper makes a profit of Q% by selling an object for Rs. 24. Had the cost price and selling price been interchanged, it would have led to a loss of 62.5Q. With the latter cost price, what should the new selling price be to get a profit of Q%?