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15 May 2018, 11:28
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
70% (01:44) correct
30%
(01:18)
wrong
based on 87
sessions
History
Date
Time
Result
Not Attempted Yet
A temple has a hall which contains 24 pillars, out of which some are of a rectangular cross-section while others have a circular cross-section. Also, some of the pillars have a golden covering while others do not. How many pillars are neither rectangular nor have a golden covering?
(1) 10 pillars are such which have a circular cross section.
(2) All rectangular pillars have a golden covering.
(1) 10 pillars are such which have a circular cross section.
(2) All rectangular pillars have a golden covering.
15 May 2018, 11:45
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Answer two is missing absolute values. Hence shouldn't be correct. Answer one and two together still not provide the split between circular gold and circular no gold. --> E
Do I am misinterpreting the question?
Best,
Do I am misinterpreting the question?
Best,
16 May 2018, 00:25
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Solution
Given:
• A temple has a hall with 24 pillars
• Some pillars are of rectangular cross-section, others have a circular cross-section
• Some pillars have a golden covering, others do not have it
To find:
• How many pillars are neither rectangular nor have a golden covering
Analysing Statement 1
• As per the information provided in Statement 1, 10 pillars are there with a circular cross-section
- o But from this statement, we cannot find out any information about the pillars with or without golden covering
Hence, Statement 1 is not sufficient to answer
Analysing Statement 2
• As per the information provided in Statement 2, all rectangular pillars have a golden covering
- o But from this statement, we cannot find out any information about the pillars with circular cross-section
Hence, Statement 2 is not sufficient to answer
Combining Both Statements
• If we combine the information present in both the statements together, we can say there are 14 pillars with rectangular cross-section and golden covering, and 10 pillars with circular cross-section.
• But we still don’t know out of the 10 pillars with circular cross-section, how many have golden covering
Hence, the correct answer is option E.
Answer: E
