Official Quant thread for CAT 2013

@DeAdLy said:
arey i wrote 20 instead of 2%. ur approach is correct as well as answer according to 20%.
bhai toh fir jaldi se ans options hata do nahi toh log pathar se marenge mujhe.
@saurav205 said:
40c2/200c2But options mein toh hai hi nai...
apka answer bilkul sahi hai..options to confuse karne ke liye hain
arey maine 2% ko 20 % likh diya isliye.
@viewpt said:
bhai toh fir jaldi se ans options hata do nahi toh log pathar se marenge mujhe.
arey i edited the question..so no chnc of pathar..
@sa1m007 said:
@saurav205 Thank u sir for trying .......... the question is from elitmus exam ........ !!
Bhai mere , please do not call me sir.
And I need to know the OA man...I will cross check again....
I do not want the source...
@saurav205 said:
Bhai mere , please do not call me sir.And I need to know the OA man...I will cross check again....I do not want the source...
kaun sa Q yar??
@DeAdLy said:
kaun sa Q yar??
there is a question on IT slab man...simple hai , just thoda calculations hai....
Might have made some mistake...

@DeAdLy said:
kaun sa Q yar??
@saurav205 said:
there is a question on IT slab man...simple hai , just thoda calculations hai....Might have made some mistake...
Don't do spamming over here bhailogon..its under the vigilance of moderators..can be banned. PM can be used effectively.
@DeAdLy said:
mere taraf se biQ: A manufacturer claims that only 2 % items are defective in a shipment of 200. A random sample of 2 items is drawn from shipment of 200 items. What is the probability that both items drawn are defective?a: 3/19900b: 6/19900c: 9/19900d: 8/19900
@iLoveTorres said:
@DeAdLy said:
b) hai kya?
@DeAdLy said:
mere taraf se biQ: A manufacturer claims that only 2 % items are defective in a shipment of 200. A random sample of 2 items is drawn from shipment of 200 items. What is the probability that both items drawn are defective?a: 3/19900b: 6/19900c: 9/19900d: 8/19900
4c2/200c2 ?
A function f(x) is defined as (x + 1) × f(x + 1) + x × f(x) + (x – 1) × f(x – 1) = 0 for x ≥ 2 . If f(1) = 40 and f(6) = 180, find the value of f(14).

Q:

A newspaper costs rs 11 to print on a daily basis. Its sale price is rs 3. The newspaper gives a sale incentive of 40% on the printed price, to the newspaper vendors. The newspaper makes up for the loss through ads, which are charged on the basis of per column centimeter rates. The ad rates of newspaper are rs 300 per cc. It has to give an incentive of 15% on the advertising bill to the advertising agency. If the newspaper has circulation of 12000 copies, what is the approximate minimum ad booking required if the news paper has to break even on a particular day.

a: 300cc
b: 350cc
c: 435cc
d: 450cc

Post with explanation
If log a to the base c = 1/2 ,If log b to the base d = 1/3 , where a, b, c and d are distinct natural numbers and a
@nramachandran said:
A function f(x) is defined as (x + 1) × f(x + 1) + x × f(x) + (x – 1) × f(x – 1) = 0 for x ≥ 2 . If f(1) = 40 and f(6) = 180, find the value of f(14).
-80 ?
@nramachandran said:
If log a to the base c = 1/2 ,If log b to the base d = 1/3 , where a, b, c and d are distinct natural numbers and a
its 80 only
@nramachandran said:
If log a to the base c = 1/2 ,If log b to the base d = 1/3 , where a, b, c and d are distinct natural numbers and a
36?
a=2, b=3,c=4,d=27
@DeAdLy said:
Q:A newspaper costs rs 11 to print on a daily basis. Its sale price is rs 3. The newspaper gives a sale incentive of 40% on the printed price, to the newspaper vendors. The newspaper makes up for the loss through ads, which are charged on the basis of per column centimeter rates. The ad rates of newspaper are rs 300 per cc. It has to give an incentive of 15% on the advertising bill to the advertising agency. If the newspaper has circulation of 12000 copies, what is the approximate minimum ad booking required if the news paper has to break even on a particular day.a: 300cc b: 350ccc: 435ccd: 450ccPost with explanation
is this the OA if correct will post the solution
@nramachandran said:
If log a to the base c = 1/2 ,If log b to the base d = 1/3 , where a, b, c and d are distinct natural numbers and a
36 ?

a^2 = b
c^3 = d
a = 2,b = 3,c = 4,d = 27
a + b + c + d = 36
@iLoveTorres said:
is this the OA if correct will post the solution