The cost of a bars of a precious metal varies directly as the square of the weight of bar. Metal bars of weights in ratio 4:5:6 were bought from 3 different places and melted together to form a big bar. The big bar costed 4440 rupees more than total cost of metal bars. What is cost of lightest bar? Method Pls.
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If a x% discount is given on a chair its rates reduces by 300 rupees if this x % discount is given two more times suceesively its rate will be 768 rupees find its cost price
##cat16 Find sum of all real roots of X(x+12)(x+6)(x+18)=1729
Find the sum of all the factors of 2^6 x 3^5 x 5^4 which are divisible by 10 but not by 90.
Two boxes as given balls contains colored balls: box 1: 4 red , 11 green and 10 blue and box 2, 21 red, 16 green and 12 blue. one ball is transferred from box 1 to 2, and then one ball is drawn from box 2. if this turns out to be red, what is probability that a blue ball is transferred?
Product M is produced by mixing chemical X and chemical Y in the ratio of 5 : 4. Chemical X is prepared by mixing two raw materials, A and B, in the ratio of 1 : 3. Chemical Y is prepared by mixing raw materials, B and C, in the ratio of 2 : 1. Then the final mixture is prepared by mixing 864 units of product M with water. If the concentration of the raw material B in the final mixture is 50%, how much water had been added to product M?
##sily pointers_ quant##notes ##____/\____ :mg
1)factors of n^2 less than n but not a factor of n .
(Factors of n^2. -1)/2 -(factors n)+1
2)N=a^p*b^q*c^r....
No of factors of n that are perfect squares
Grt(p/2 +1)*grt(q/2 +1)*...grt =greatest integer fuxntion
3) )N=a^p*b^q*c^r.... No of factors of n that are perfect cubes Grt(p/3 +1)*grt(q/3 +1)*...grt =greatest integer fuxntion
#logical reasoning
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##cat16 Sum of all interior angles of 7 regular polygons with different no. Of sides is 180Ć 17. Find the total no. Of sides of all polygons
any link to practice geometry questions online??
Is there an Official CAT thread for LR-DI for 2016 also ?? I just found the one for 2015 which is as good as dead..
How many no(n) r there b/w 1 & 200 such that n/2,n/3 & 2n +1/5 r all composite natural no. ?
if a b c d p q are non zero distinct integers and a+bi/c+di = p/q then a2+b2/c2+d2= ?
In a staircase, there are 10 steps. A child is attempting to climb the staircase. Each time she can either make 1 step or 2 steps. In how many different ways can she climb the staircase?
If f(f(n))+f(n)=2n+3 and f(0)=1, what is the value of f(2012)?
If f(1)=4 and f(x+y)=f(x)+f(y)+7xy+4, then f(2)+f(5)=?
@ - sin@ = 2*pi/3 where @ is in radians, then the value of @ is___
Please explain the procedure to solve this.