Official Quant thread for CAT 2013

@Spinelli said:
A shopkeeper earns a profit of Rs. 1 by selling one pen and incurs a loss of 40 paise per pencil while selling pencils of her old stock. In a particular month she incurs a loss of Rs.5. In this period, she sold 45 pens, How many pencils did she sell in this period?
50/0.4 = 125?

regards
scrabbler

@Spinelli said:
A shopkeeper earns a profit of Rs. 1 by selling one pen and incurs a loss of 40 paise per pencil while selling pencils of her old stock. In a particular month she incurs a loss of Rs.5. In this period, she sold 45 pens, How many pencils did she sell in this period?
100
@Spinelli said:
A shopkeeper earns a profit of Rs. 1 by selling one pen and incurs a loss of 40 paise per pencil while selling pencils of her old stock. In a particular month she incurs a loss of Rs.5. In this period, she sold 45 pens, How many pencils did she sell in this period?
125
45-x*0.40=-5
Let a,b,c be the length of sides of triangle ABC,given
(a+b+c)(b+c-a)=gbc.The value of g will lie
between
a) -1 and 1
b) 0 and 4
c) 0 and 1
d) 0 and 4
e) noone of these
number of ways in which 6 chocolates can be divided into 3 children so that 3 of them get atleast one ?
@Spinelli said:
A shopkeeper earns a profit of Rs. 1 by selling one pen and incurs a loss of 40 paise per pencil while selling pencils of her old stock. In a particular month she incurs a loss of Rs.5. In this period, she sold 45 pens, How many pencils did she sell in this period?
0.4*Pencil - Pen = 5
=> Pencil = 125
@nole said:
Let a,b,c be the length of sides of triangle ABC,given(a+b+c)(b+c-a)=gbc.The value of g will liebetween a) -1 and 1b) 0 and 4c) 0 and 1d) 0 and 4e) noone of these
0 and 4 k do options hai?
@nole said:
Let a,b,c be the length of sides of triangle ABC,given(a+b+c)(b+c-a)=gbc.The value of g will liebetween a) -1 and 1b) 0 and 4c) 0 and 1d) 0 and 4e) noone of these
0 and 4 ?
@Spinelli said:
@scrabbler how did you get it?can you please explain!
@Spinelli said:
A water tank has steps inside it. A monkey is sitting on the topmost step(i.e. the first step). The water level is at the ninth step.(i) He jumps 3 steps down and then jump back 2 steps up. In how many jumps will he reach the water level?(ii) After drinking water, he wants to go back. For this, he jumps 4 steps up and then jumps back 2 steps down in every move. In how many jumps will he reach back the top step?
Enumerated...

Downward starts from 1: 4, 2, 5, 3, 6, 4, 7, 5, 8, 6, 9 => 11 steps

Return starts from 9: 5, 7, 3, 5, 1 => 5 steps.

regards
scrabbler

@mailtoankit said:
number of ways in which 6 chocolates can be divided into 3 children so that 3 of them get atleast one ?
3^3 = 27 ??
@ScareCrow28 said:
3^3 = 27 ??
sir OA nahi pata....approach batao ?
@mailtoankit @ScareCrow28 Sorry wo nind me galti se likh diya. 0 and 4 ka ek hi option hai. answer is 0 and 4. kaise aya ?
@ScareCrow28 said:
3^3 = 27 ??
sir OA nahi pata...approach batao ?
@nole said:
@mailtoankit@ScareCrow28 Sorry wo nind me galti se likh diya. 0 and 4 ka ek hi option hai. answer is 0 and 4. kaise aya ?
I put a=b=c=1! Other methods are also there (obviously) for which I have to use a pen
@nole said:
Let a,b,c be the length of sides of triangle ABC,given(a+b+c)(b+c-a)=gbc.The value of g will liebetween a) -1 and 1b) 0 and 4c) 0 and 1d) 0 and 4e) noone of these
I feel 0 to 4 but not able to prove.

regards
scrabbler

@Spinelli 45 pen pe 45 profit.now total loss i.e overall loss is 5 rs. so he must had lost 50 rs in pencil.
40 paise for 1 pencil. so 5000/40 =125 pencil
@mailtoankit said:
sir OA nahi pata...approach batao ?
Sir mat bolo mere bhai
I distributed 1 chocolate to all of them, now only 3 are left. These 3 have 3 options. So 3*3*3 = 27. Highly circumspect @scrabbler Comments?
@mailtoankit said:
number of ways in which 6 chocolates can be divided into 3 children so that 3 of them get atleast one ?
720
@ScareCrow28 k, can u hint at approach.how to proceed ?
@ScareCrow28 said:
Sir mat bolo mere bhai I distributed 1 chocolate to all of them, now only 3 are left. These 3 have 3 options. So 3*3*3 = 27. Highly circumspect @scrabbler Comments?
No clue....are the chocolates distinct or identical? When distributing 3 first you have assumed identical, then taken distinct for 3^3 so can't agree with your answer probably...sochna padega

Are there answer options? mailtoankit

regards
scrabbler