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05 May 2021, 07:00
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E
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Difficulty:
95%
(hard)
Question Stats:
26% (01:23) correct
74%
(01:15)
wrong
based on 117
sessions
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Not Attempted Yet
Is arc ABC equal in length to arc DEF?
(1) AD⊥CF
(2) AD=CF
Attachment:
1.jpg [ 6.11 KiB | Viewed 7198 times ]
08 May 2021, 01:00
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Bunuel
Consider two cases below:
Case 1: M is the center of the circle --> arc ABC = arc DEF;
Case 2: M is NOT the center of the circle --> arc ABC # arc DEF.
Not sufficient.
Answer: E.
Attachment:
2.png [ 4.12 KiB | Viewed 7046 times ]
General Discussion
Updated on: 12 May 2021, 12:39
Originally posted by TarunKumar1234 on 05 May 2021, 07:40.
Last edited by TarunKumar1234 on 12 May 2021, 12:39, edited 1 time in total.
Last edited by TarunKumar1234 on 12 May 2021, 12:39, edited 1 time in total.
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Is arc ABC equal in length to arc DEF?
Stat1: AD⊥CF
if AD and CF divide circle in 4 parts. So, arc ABC = arc DEF. But, if M is not the center then, arc ABC not equal to arc DEF Not Sufficient
Start2: AD=CF, dia are same in circle and doesn't help to get arc length. Not Sufficient
Combining both, Still we have a condition when M is not the center of the circle. Not Sufficient
So, It is E.
Stat1: AD⊥CF
if AD and CF divide circle in 4 parts. So, arc ABC = arc DEF. But, if M is not the center then, arc ABC not equal to arc DEF Not Sufficient
Start2: AD=CF, dia are same in circle and doesn't help to get arc length. Not Sufficient
Combining both, Still we have a condition when M is not the center of the circle. Not Sufficient
So, It is E.
