If 10 objects are arranged in a row then number of ways of selecting three of these objects so that no two of them are next to each other is ?
The value of each of a set of coins varies as the square of its diameter, if its thickness remains
constant, and it varies as the thickness, if the diameter remains constant. If the diameter of two
coins are in the ratio 4 : 3, what should be the ratio of their thickness if the value of the first is four
times that of the second? PLS help me with approach . ANS is 9:4
A dishonest seller uses a weight of 800 gm in place of 1 kg and adds 20% impurities in sugar. What is his profit percentage if he claims to be selling at cost price?
50%
36%
45.5%
36%
none of these
The number of x digit numbers in the nth base system will be ?
Please provide explanations.
Find the infinite sum of the series
1/1 + 1/3 + 1/6 + 1/10 + 1/15 + .......
- 2.25
- 3
- 4
- 2
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Does anybody has solutions for geometry 5c and 5d exercise of time handbook?Please it would be of great help,just 4 pages pitcures:)
I want to donate TIME material for CAT of the year 2014. I also have CET material from TIME and IMS. Whoever interested, please contact me. I stay in Andheri, Mumbai. Contact me ASAP. I am not available after 9th June.
Contact No.9022446595
A milk man mixed 1 : 4 solution of milk and water with another 1 : 2 solution of milk and water in the volume of ratio 3 : 2. If the profit earned by selling the first solution was 20% and the mixture was sold at the same price, what is the profit or loss percentage? You have to assume that water comes free of cost.
a. 5.26% profit
b. 5.25% loss
c. 6.25% loss
d. None of these
approach pls.??
Can anyone post CAT papers and solutions from 2008-2014.. Thanks.
Q1 Total number of terms in (1+x+x^2)^7
Q2 Total number of terms in (1-x)^11*(1+x+x^2)^11
Q3 What is the coefficient of x^19 in (1-x)(2+x)(3-x)(4+x).....(20+x) ?
Also what is the formula/Trick for finding total number of terms ?
find the sum of the series 1.2 + 2.2^2 + 3.2^3 + ...... 100.2^100
- 99.2^100 + 2
- 99.2^101 + 2
- None of these
- 100.2^101 + 2
0 voters
Adam attempted to add 10 two-digit nos. One of them, P, was the reverse of one of the others. If P was replaced by another two-digit no. Q ans its reverse was replaced by the reverse of Q. the average of the numbers will be 6.6 more.
(The sum of digit of Q) - (The sum of digit of P)= ?
With Explanation please.Thanks in advance
Pipe A, B and C are kept open and together fill a tank in t minutes. Pipe A is kept open throughout, pipe B is kept open for the first 10 minutes and then closed. Two minutes after pipe B is closed, pipe C is opened and is kept open till the tank is full. Each pipe fills an equal share of the tank. Furthermore, it is known that if pipe A and B are kept open continuously, the tank would be filled completely in t minutes. Find t?
I know the answer.. I want to know the short method..!
Q.Find the remainder when 12^(13^14) is divided by 145.
The answer posted in the book is 12.
My approach: 13^14 is 182. Cyclicity of powers are 20. So it reduces to rem (12^2)/145 => rem(144/145) which should be 144.
Could you please tell what is wrong in the approach and if so, how to reach the answer of 12 ?
In howmany ways can three cards be randomly drawn from a pack of 52 cards such that atleast one of the three is a diamond?
A question from CL Mock 3. Sorry, but i don't remember all the questions :-/
Find the sum of the series :
2/(2^4 - 2^2) + 3/(3^4 - 3^2) + 4/(4^4 - 4^2) ...... upto 14 terms
- 230/120
- 119/120
- 119/480
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Pipe A is an inlet pipe filling the tank at 8000 l/hr . Pipe B empties the tank in 3 hours . What is the capacity of the tank ....?
Plz tell me the ans with explanation