International Maths Olympiad Forum By SOF Olympiad Trainer - Page 313
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Moksha Shah from DPS, Ahmedabad
Subject :IMO    Class : Class 4

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Krish from GEMS Modern Academy, Dubai
Subject :IMO    Class : Class 6

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Arnav gupta from DPS rohini, Delhi
Subject :IMO    Class : Class 6

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Mansi Sharma from Podar International, Mumbai
Subject :IMO    Class : Class 5

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sricharan from NHG, Bangalore
Subject :IMO    Class : Class 4

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Saksham Chanani from Sri Sri Academy, Kolkata
Class : Class 7
C

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Vihaan from Maharahrta, MAHARASHTRA
Class : Class 7
C

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Jitender Kumar from Buds paradise school , Delhi
Subject :IMO    Class : Class 8

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Kanav Dhingra from DPS sec45, Gurgaon
Subject :IMO    Class : Class 4

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Kanav Dhingra from DPS sec45, Gurgaon
Class : Class 6

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SUKRIT TANEJA from DPS FARIDABAD, FARIDABAD
Class : Class 4
B

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Hari Sharan Kalia from Sainik School Kapurthala, Nangal
Subject :IMO    Class : Class 4

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Parth somani from Daffodils world school, Sikar Rajasthan
Subject :IMO    Class : Class 6

Following are the steps of construction of an angle of 120°. Identify the wrong step.
(i) Draw a ray
(ii) With A as centre and a convenient radius, draw an arc to intersect at X.
(iii) With X as the centre, draw an arc with the same radius to intersect the above arc at C.
(iv) With C as centre, again draw an arc to intersect the first arc at D.
(v) Draw ray ∠CAB is the required angle of measure 120°

A(iii) and (v) only
B(iv) only
C(i) and (iv) only
D(v) only


ACCORDING TO ME ANSWER IS B

Ans 1:

Aashi Ramchandani from Bombay Scottish School, Mumbai
Class : Class 7

Ans 2:

Aashi Ramchandani from Bombay Scottish School, Mumbai
Class : Class 7

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Advai Shukla from Treamis World School, Bangalore
Subject :IMO    Class : Class 4

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