@HarshitShah said:Hey Puys, 'Prep' section (Option present on the top) would be more helpful for posting Quant questions there instead of posting and discussing them here. Over here it's very difficult to find a particular question and it's related answer. So I would suggest you to keep posting more and more questions under 'Prep' section.'Prep' section has awesome features like:1> You can view the answer as soon as you click on submit.2> You can't see the answer unless you've submitted.3> Solution for that particular question can be discussed below that question.Do give it a try.
Both are equally good.
Both have a huge repository.
Prep section helps you in strengthening particular sections of quant.
Quant thread has problems from all topics.
Quant thread is especially useful when you are done with your basic materials and want to apply the basics to tougher problems.
At the end of the day it's just a matter of personal choice. :P
Post a question in either and rest assured that it won't go unanswered. :D
Both have a huge repository.
Prep section helps you in strengthening particular sections of quant.
Quant thread has problems from all topics.
Quant thread is especially useful when you are done with your basic materials and want to apply the basics to tougher problems.
At the end of the day it's just a matter of personal choice. :P
Post a question in either and rest assured that it won't go unanswered. :D
A school having 270 students provides facilities for playing four games €“ Cricket, Football, Tennis
and Badminton. There are a few students in the school who do not play any of the four games. It is
known that for every student in the school who plays at least N games, there are two students who
play at least (N €“ 1) games, for N = 2, 3 and 4. If the number of students who play all the four games
is equal to the number of students who play none, then how many students in the school play
exactly two of the four games?
and Badminton. There are a few students in the school who do not play any of the four games. It is
known that for every student in the school who plays at least N games, there are two students who
play at least (N €“ 1) games, for N = 2, 3 and 4. If the number of students who play all the four games
is equal to the number of students who play none, then how many students in the school play
exactly two of the four games?
Two friends – Prakash and Arpit – started running simultaneously from a point P in the same
direction along a straight running track. The ratio of the speeds of Prakash and Arpit was 2 : 5
respectively. Two hours later, Arpit turned back and started running backwards at one-fifth of his
original speed. He met Prakash at a distance of 10 km from the point P. What was Prakash's
running speed?
direction along a straight running track. The ratio of the speeds of Prakash and Arpit was 2 : 5
respectively. Two hours later, Arpit turned back and started running backwards at one-fifth of his
original speed. He met Prakash at a distance of 10 km from the point P. What was Prakash's
running speed?
@sparklingaubade said:A school having 270 students provides facilities for playing four games €“ Cricket, Football, Tennisand Badminton. There are a few students in the school who do not play any of the four games. It isknown that for every student in the school who plays at least N games, there are two students whoplay at least (N €“ 1) games, for N = 2, 3 and 4. If the number of students who play all the four gamesis equal to the number of students who play none, then how many students in the school playexactly two of the four games?
60?
Students playing exactly___0____I____II___III___IV___ games
_______________________x___4x__2x____x____x___students
Total = 9x = 270
Hence, Exactly II games = 2x = 60
@sparklingaubade said:Two friends – Prakash and Arpit – started running simultaneously from a point P in the samedirection along a straight running track. The ratio of the speeds of Prakash and Arpit was 2 : 5respectively. Two hours later, Arpit turned back and started running backwards at one-fifth of hisoriginal speed. He met Prakash at a distance of 10 km from the point P. What was Prakash'srunning speed?
2.5kmph
Let speeds be 2x and 5x
P--------------Prakash----Meeting point---------Arpit
____4x________|_________4x_______2x_____|
From here 8x = 10
Hence speed of prakash = 2x = 2.5kmph ..
1.Determine the leftmost three digits of the number 1^1 + 2^2 + 3^3 + €Ś + 999^999 + 1000^1000.
@nramachandran said:Ramesh analysed the monthly salary figures of five vice presidents of his company. All the salary figures are in integer lakhs. The mean and the median salary figures are Rs. 5 lakhs, and the only mode is Rs. 8 lakhs. Which of the options below is the sum (in Rs. lakhs) of the highest and the lowest salaries?9101112None of the above
1 8 8 8 8=25 lakhs
9
1.There is a sequence of 16 terms such that sum of every consecutive seven terms is -1 and sum of every consecutive eleven terms is 1. Find the number of distinct integers that appear in the sequence.
@nramachandran said:Ram prepares solutions of alcohol in water according to customers €™ needs. This morning Ram has prepared 27 litres of a 12% alcohol solution and kept it ready in a 27 litre delivery container to be shipped to the customer. Just before delivery, he finds out that the customer had asked for 27 litres of 21% alcohol solution. To prepare what the customer wants, Ram replaces a portion of 12% solution by 39% solution. How many litres of 12% solution are replaced?A.5B.9C.10D.12E.15
x*12+(27-x)*39=27*21
12x-39x=-27*18
x=18
27-18=9
@sparklingaubade said:A school having 270 students provides facilities for playing four games €“ Cricket, Football, Tennisand Badminton. There are a few students in the school who do not play any of the four games. It isknown that for every student in the school who plays at least N games, there are two students whoplay at least (N €“ 1) games, for N = 2, 3 and 4. If the number of students who play all the four gamesis equal to the number of students who play none, then how many students in the school playexactly two of the four games?
N=2
Only 2+only 3+only 4=x
only 1+only 2 +only 3+only 4=2x
only 1=only 2+only 3+only=x
N=3
only 3+only 4=y
only 2+only 3+only 4=2y
only 2=only3+only4=y
N=4
only 4=z
only 3+only 4=2z
only3=only4=z
only2=2z
only 1=4z
None=z
9z=270
z=30
only2=60
@sparklingaubade said:1.There is a sequence of 16 terms such that sum of every consecutive seven terms is -1 and sum of every consecutive eleven terms is 1. Find the number of distinct integers that appear in the sequence.
3 i think..
a1 a2..a16 be the series
a1+a2+..a7=-1 and a1+a2+..a11=1
a8+..a11=2
similarly a9+..a12=2 implies a8=a12=a16
every fourth term is equal.
a9=a13
a10=a14
a11=a15
now
a1+..a7=-1
a2+...a8=-1
implies a1=a8
every 7th term is equal
similarly
a2=a9 =a6 =a13
a3=a10=a14=a7
a4=a8=a11=a15
segregate them and u get the answer
a1 a2..a16 be the series
a1+a2+..a7=-1 and a1+a2+..a11=1
a8+..a11=2
similarly a9+..a12=2 implies a8=a12=a16
every fourth term is equal.
a9=a13
a10=a14
a11=a15
now
a1+..a7=-1
a2+...a8=-1
implies a1=a8
every 7th term is equal
similarly
a2=a9 =a6 =a13
a3=a10=a14=a7
a4=a8=a11=a15
segregate them and u get the answer
@sparklingaubade said:1.Determine the leftmost three digits of the number 1^1 + 2^2 + 3^3 + €Ś + 999^999 + 1000^1000.
1000^1000
No of digits and in 1000^1000, 1^1 + 2^2 + 3^3 + .... + 1000^1000 and 1000^1 + 1000^2 + ... + 1000^1000 is same and leftmost three digits of 1000^1000 are 100 and for 1000^1 + 1000^2 + ... + 1000^1000 also its 100
So, leftmost three digits for 1^1 + 2^2 + 3^3 + .... + 1000^1000 will also be 100
@sparklingaubade said:1.There is a sequence of 16 terms such that sum of every consecutive seven terms is -1 and sum of every consecutive eleven terms is 1. Find the number of distinct integers that appear in the sequence.
Since sum of every seven consecutive terms is -1, series will be like:-
a, b, c, d, e, f, g, a, b, c, d, e, f, g, a, b
Also, sum of every 11 consecutive terms is 1, we can say that
a = e
b = f
c = g
d = a
e = b
So, a = b = d = e = f
and c = g
So, 5a + 2c = -1
and 8a + 3c = 1
So, a = 5 and b = -13
Only two distinct integers
@sparklingaubade said:1.There is a sequence of 16 terms such that sum of every consecutive seven terms is -1 and sum of every consecutive eleven terms is 1.
Just a small extension.
Is it possible to have 17 or more terms in such a series given rest all conditions remains the same??
@gupanki2 said:The value of a diamond varies direclty with the square of its weight. A diamond broke into 3 pieces whose weights are in ratio 32:24:9. The loss caused due to the breakage was Rs 25.44 lakh. Find inital value of diamond ( in lakhs)?
k*65^2-k(32^2+24^2+9^2)=2544000
k=1000
c=k*w^2
w=65
c=1000*4225=42.25lakh
@nramachandran said:Ramesh analysed the monthly salary figures of five vice presidents of his company. All the salary figures are in integer lakhs. The mean and the median salary figures are Rs. 5 lakhs, and the only mode is Rs. 8 lakhs. Which of the options below is the sum (in Rs. lakhs) of the highest and the lowest salaries?9101112None of the above
9?
@amresh_maverick said:How many integer values of x satisfy|x – 2| + |x + 3| + |5 – x| + |x – 8|
4 values??
2,3,4,5
Ram purchased some items: books, pens, pencils, erasers, sharpeners, compass and geometry boxes. He bought at least seven pieces of each of above mentioned items but he didn't but no two items in same quantity. He did not buy anything else. It is given that among the seven items he bought geometry boxes are least in quantity. Number of geometry boxes he bought can be exactly determined if the total number of items bought is at most
a) 70
b) 72
c) 74
d) 76
e) 78