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08 May 2025, 02:19
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
49% (01:02) correct
51%
(01:03)
wrong
based on 263
sessions
History
Date
Time
Result
Not Attempted Yet
In a group of 70, every member speaks English or French. How many members speak only French?
(1) 50 members speak English.
(2) 10 members speak both English and French.
Gentle note to all experts and tutors: Please refrain from replying to this question until the Official Answer (OA) is revealed. Let students attempt to solve it first. You are all welcome to contribute posts after the OA is posted. Thank you all for your cooperation!
(1) 50 members speak English.
(2) 10 members speak both English and French.
Gentle note to all experts and tutors: Please refrain from replying to this question until the Official Answer (OA) is revealed. Let students attempt to solve it first. You are all welcome to contribute posts after the OA is posted. Thank you all for your cooperation!
08 May 2025, 03:59
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T = 70
N(none) = 0
Let both be B
T = F+E-B+N
F only = F - B
T = F only+E
F only = T-E
S1
F only = T-E
F only = 70-50 = 20
Sufficient
S2
B = 10
70 = F+E-20
F+E = 90
We don't know the value of E to calculate F and subsequently F only
Insufficient
N(none) = 0
Let both be B
T = F+E-B+N
F only = F - B
T = F only+E
F only = T-E
S1
F only = T-E
F only = 70-50 = 20
Sufficient
S2
B = 10
70 = F+E-20
F+E = 90
We don't know the value of E to calculate F and subsequently F only
Insufficient
Bunuel
08 May 2025, 12:07
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Bunuel
In a group of 70 , each speak English or French. None = 0
We need to find : French only.
Statement 1:
(1) 50 members speak English.
Since, 50 speak English, which includes both English only, and English & French.
Total = 70 = French only + Eng & French + English only.
70 = French Only + 50
French Only = 20
Hence, Sufficient
Statement 2:
(2) 10 members speak both English and French.
As we don’t know the values of English and French speaking segment individually. We cannot find the answer.
Hence, Insufficient
Option A
