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10 Jul 2026, 10:57
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Bookmarks
interface 1=1
interface 2=1
total would not respond=96s=48c=144
Both-both used interface
Int1 only only-would use interface 1, would not use to interface2
Int2would not use int 1, would use int 2
Neither-would not use both interfaces
ttl(X)=Both+int1 only+int2 only+neither
ttl would not use=int1+int2+2(neither)=144
Statement 1
60 users said that they would use both interfaces
both=60
x=60+11only+12only+neither
11only+12only+2(neither)=144
Not sufficient
Statement 2
Neither=Both
N=neither+11only+12only+neither
N=11only+12only+2(neither)
N=144
sufficient
ANS:B
interface 2=1
total would not respond=96s=48c=144
Both-both used interface
Int1 only only-would use interface 1, would not use to interface2
Int2would not use int 1, would use int 2
Neither-would not use both interfaces
ttl(X)=Both+int1 only+int2 only+neither
ttl would not use=int1+int2+2(neither)=144
Statement 1
60 users said that they would use both interfaces
both=60
x=60+11only+12only+neither
11only+12only+2(neither)=144
Not sufficient
Statement 2
Neither=Both
N=neither+11only+12only+neither
N=11only+12only+2(neither)
N=144
sufficient
ANS:B
10 Jul 2026, 11:05
Kudos
Bookmarks
Using two set approach
As per the question x + y = 96 + 48 = Guys who said no to atleast 1 interface
Statement 1. This just gives you the value of I yes and II yes. It doesnt help in finding the total
Statement 2: Let the people who use both and neither be = k
Notice that the other values can be back calculated and k cancels out to give you x + y as total which is
Hence answer is B
Statement 2 ---> Let Neighter
As per the question x + y = 96 + 48 = Guys who said no to atleast 1 interface
Statement 1. This just gives you the value of I yes and II yes. It doesnt help in finding the total
Statement 2: Let the people who use both and neither be = k
Notice that the other values can be back calculated and k cancels out to give you x + y as total which is
| I yes | I No | Total | |
| II Yes | k | x - k | x |
| II No | y - k | k | y |
| x |
Hence answer is B
Statement 2 ---> Let Neighter
Bunuel
10 Jul 2026, 11:09
Kudos
Bookmarks
We know from passage that,
2 reasons "would not use" A, "Slow loading" B offered by users.
Now 3 scenarios, either they said they'll use both (Both), they'll use only one(O), they'll use none(N)
since we know, if people said they'll not use any one of the 2, that mean they'd have said they'll use the other one.
So basically, our set becomes => A(who responded only A, who will use B) + B (Who responded only B, who will use A) + 2 X Answered A and B both(None, who would use none) = 96 + 48 = 144
=>> ONLY A + ONLY B + 2BOTH = 144
Now we need to find Only A + only B + Both + None= Union of all = ?
1)both =60, even if we put the value of both in the equation we will get only only one response value, None would be unknown. SO not sufficient.
2) If both = none, The we can modify our given equation as
only A + only B + Both + Both = 144 we can rewrite as only A+ Only B+ Both +None= 144. This is what we were looking for. So sufficient.
Answer should be B
2 reasons "would not use" A, "Slow loading" B offered by users.
Now 3 scenarios, either they said they'll use both (Both), they'll use only one(O), they'll use none(N)
since we know, if people said they'll not use any one of the 2, that mean they'd have said they'll use the other one.
So basically, our set becomes => A(who responded only A, who will use B) + B (Who responded only B, who will use A) + 2 X Answered A and B both(None, who would use none) = 96 + 48 = 144
=>> ONLY A + ONLY B + 2BOTH = 144
Now we need to find Only A + only B + Both + None= Union of all = ?
1)both =60, even if we put the value of both in the equation we will get only only one response value, None would be unknown. SO not sufficient.
2) If both = none, The we can modify our given equation as
only A + only B + Both + Both = 144 we can rewrite as only A+ Only B+ Both +None= 144. This is what we were looking for. So sufficient.
Answer should be B
Bunuel
10 Jul 2026, 11:17
Kudos
Bookmarks
a: number of users who said yes to both
b: number of users who said no to both
c: number of users who said yes to first & no to second
d: number of users who said no to first & yes to second
total users: n = a+b+c+d?
given: total no responses = 96+48=144
2b+c+d = 144
I) a = 60
n = 60+b+c+d
cannot substitute for b+c+d hence insufficient.
II) b = a
n = b+b+c+d = 2b+c+d
we know this is equal to 144 hence n = 144 sufficient
answer B
b: number of users who said no to both
c: number of users who said yes to first & no to second
d: number of users who said no to first & yes to second
total users: n = a+b+c+d?
given: total no responses = 96+48=144
2b+c+d = 144
I) a = 60
n = 60+b+c+d
cannot substitute for b+c+d hence insufficient.
II) b = a
n = b+b+c+d = 2b+c+d
we know this is equal to 144 hence n = 144 sufficient
answer B
