Official Quant thread for CAT 2013

MBA CAT 2024
5701
@maddy2807 said:
Four of the five numbers given below are all alike in a certain way so as to form a group. Which one does not belong to the group?A 110 B 29 C 47 D 48 E 740 post reason for ur ans also
48 i suppose.
Taking sum of digits down to single digit yields 2 for all other numbers. For 48, it is 4+8=12 = 1+2 = 3
5702
@maddy2807 digit sum as @Angadbir pointed out 😁 ..
5703
@maddy2807 said:
Four of the five numbers given below are all alike in a certain way so as to form a group. Which one does not belong to the group?A 110 B 29 C 47 D 48 E 740 post reason for ur ans also
48?

rest all have digit sum 2
5704
@maddy2807 said:
Four of the five numbers given below are all alike in a certain way so as to form a group. Which one does not belong to the group?A 110 B 29 C 47 D 48 E 740

post reason for ur ans also
48 doesnt have digit sum as 11
5705
@maddy2807 said:
Four of the five numbers given below are all alike in a certain way so as to form a group. Which one does not belong to the group?A 110 B 29 C 47 D 48 E 740 post reason for ur ans also
48? (digit sum)
Baaki kuchh aur similarities dikh nahi rahi :splat:
5706
Statements:
1. Some forests are zoos.
2. All zoos are lions.
3. No lion is panther.
4. All panthers are amphibians.

Conclusions:
I. Some zoos are panthers.
II. Some panthers are forests.
III. Some amphibians are panthers.
IV. All lions are forests.
5707
@maddy2807 said:
8?
Please share your approach
i counted manually by making pairs of
1,4 - 2 ways
2,3 4 ways
and 5,0 -2 ways
any other way u used , would be difficult for octagon or decagon
5708
@krum said:
2^5/2=8
Ye kon sa formula h..?
Didn't get it :splat:
5709
@maddy2807 said:
Statements:

1. Some forests are zoos.
2. All zoos are lions.
3. No lion is panther.
4. All panthers are amphibians.

Conclusions:

I. Some zoos are panthers.
II. Some panthers are forests.
III. Some amphibians are panthers.
IV. All lions are forests.
2 and 3 ???
5710
@techsurge said:
Please share your approachi counted manually by making pairs of 1,4 - 2 ways2,3 4 ways and 5,0 -2 waysany other way u used , would be difficult for octagon or decagon
8 ways
HHHHH
TTTTT
HHHHT
HHHTT , HHTHT - 2 ways
HHTTT , HTHTT - 2 ways
TTTTH
5711
@maddy2807 said:
Statements: 1. Some forests are zoos. 2. All zoos are lions. 3. No lion is panther. 4. All panthers are amphibians.Conclusions: I. Some zoos are panthers. II. Some panthers are forests. III. Some amphibians are panthers. IV. All lions are forests.
III..? :neutral:
5712
@techsurge said:
2 and 3 ???
check again
5713
@vijay_chandola said:
Ye kon sa formula h..?Didn't get it
total 16 hai, circular hai isliye /2 kar diya, galt hi hoga :splat:, count karna tha kya ?

2^5 is 32 , ho gya aaj ka, ab chala movie dekhn e
5714
@maddy2807 said:
check again
3rd
:banghead: silly mistakes
5715
@maddy2807 said:
Statements: 1. Some forests are zoos. 2. All zoos are lions. 3. No lion is panther. 4. All panthers are amphibians.Conclusions: I. Some zoos are panthers. II. Some panthers are forests. III. Some amphibians are panthers. IV. All lions are forests.
III -_-
5716

One question from my side:


[x] = Greatest integer less than or equal to x
{x} = x €“ [x]
How many real values of x satisfy the equation 5[x] + 3{x} = 6 + x?

(a) 0 (b) 1 (c) 2 (d) More than 2

5717
@pavimai said:
find the number of positive integer solutions of the equation 2/x +15/y=5...share the approach Thanks in advance
(5x-2)(y-3)=6
6=1*6
6=2*3
only integer solution when 5x-2=3----x=1 and y=5
5718
@vijay_chandola said:
One question from my side:[x] = Greatest integer less than or equal to x{x} = x €“ [x]How many real values of x satisfy the equation 5[x] + 3{x} = 6 + x?(a) 0 (b) 1 (c) 2 (d) More than 2
0?
getting x+[x]=3
5719
@vijay_chandola said:
One question from my side:

[x] = Greatest integer less than or equal to x{x} = x €“ [x]How many real values of x satisfy the equation 5[x] + 3{x} = 6 + x?

(a) 0 (b) 1 (c) 2 (d) More than 2

0
getting x+ [x] =3
5720
@maddy2807 said:
Statements: 1. Some forests are zoos. 2. All zoos are lions. 3. No lion is panther. 4. All panthers are amphibians.Conclusions: I. Some zoos are panthers. II. Some panthers are forests. III. Some amphibians are panthers. IV. All lions are forests.
III..?