Official Quant thread for CAT 2013

MBA CAT 2022
1741
@rkshtsurana said:
In a set of 7 positive distinct numbers, both mean and median is 30. Find the largest no. this set can contain ?
111???
1742
@rkshtsurana said:
In a set of 7 positive distinct numbers, both mean and median is 30. Find the largest no. this set can contain ?
210-(1+2+3+30+31+32)
=>111
1743
@rkshtsurana said:
In a set of 7 positive distinct numbers, both mean and median is 30. Find the largest no. this set can contain ?
111

EDITED
1744

@rkshtsurana said:
In a set of 7 positive distinct numbers, both mean and median is 30. Find the largest no. this set can contain ?
59
?
1745
@catter2011
@angel.mehra 111
1746
@angel.mehra said:
59?
caught by the same logic fst
1747
If f(x)=2x/(2x+1) and f(g(x+1))=2/(f(x+1)+2) then find g(x)
1748
@krum said:
If f(x)=2x/(2x+1) and f(g(x+1))=2/(f(x+1)+2) then find g(x)
-(2x+1)/2x ? options pls
1749
@krum said:
If f(x)=2x/(2x+1) and f(g(x+1))=2/(f(x+1)+2) then find g(x)
abhi dekha :mg:

g(x)=(2x+1)/2x
1750
@catter2011 said:
If 'horse is black' is coded as %@$, 'horse in field' is coded as #%& and 'black board field' is coded as $&*, then what is the code for 'board is black'?A) *@$ (B) $*% (C) &@$ (D) #%& (E) None of these
A
@rkshtsurana said:
In a set of 7 positive distinct numbers, both mean and median is 30. Find the largest no. this set can contain ?
69 ?

edit - 111 :banghead:
1751
@krum said:
If f(x)=2x/(2x+1) and f(g(x+1))=2/(f(x+1)+2) then find g(x)
g(x) = (2x+1)/2x
1752
How many pair of letters in the word AMERICA have exactly the same number of letters as in the English alphabets?
(A) Zero (B) One (C) Two (D) Three (E) None of these
1753
@catter2011 said:
-(2x+1)/2x ? options pls
just (2x+1)/2x
1754
@krum said:
If f(x)=2x/(2x+1) and f(g(x+1))=2/(f(x+1)+2) then find g(x)
2x+1/2x
1755
@catter2011 said:
How many pair of letters in the word AMERICA have exactly the same number of letters as in the English alphabets?(A) Zero (B) One (C) Two (D) Three (E) None of these
makes no sense
1756
@krum said:
makes no sense
same here.. but get some thing
1757
@krum said:
If f(x)=2x/(2x+1) and f(g(x+1))=2/(f(x+1)+2) then find g(x)
(2x+1)/2x
1758
Four of the five numbers given below all alike in a certain way so form a group. Which is one that does not belong to group?
(A) 47 (B) 73 (C) 89 (D) 151 (E) 209
1759
@catter2011 said:
How many pair of letters in the word AMERICA have exactly the same number of letters as in the English alphabets?(A) Zero (B) One (C) Two (D) Three (E) None of these
take this -
How many pair of letters in the word AMERICA have exactly the same number of letters in between as in the English alphabets?

E R I C A - 3 in between , in eng. E D C B A , same

so just 1
1760

Consider three positive integers x,y,z. now 1/x + 1/y =1/z. Find the number of solutions if x=12?

a) 7 b) 11 c)12 d)infinite.

if anna and akka had to take some medicines, one of them can take more than 100 medicines, also one of them should take atleast 150% and atmost 250 % of the other. Find the maximum number of medicines taken by both combined.
a)247 b) 346 ) 347 d) none of these

Consider a rectangle (0,0), (2,0),(2,1),(0,1). Now what is the probability that a point is chosen in the rectangle such that the point is more closer origin than (3,1).?