International Maths Olympiad Forum By SOF Olympiad Trainer - Page 489

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 8
All seem incorrect to me

Ans 2:

Class : Class 8

Ans 3:

Class : Class 8

Ans 4:

Class : Class 7
All are incorrect.

Ans 5:

Class : Class 9
All are incorrect

Ans 6:

Class : Class 8
Figure A Does not have Infinite order of rotational symmetry. Figure B has Two Lines of Symmetry. Figure C has 1 line of symmetry. Figure D has Infinite lines of symmetry. Hence the answer is B

Ans 7:

Class : Class 8

Ans 8:

Class : Class 8

Ans 9:

Class : Class 7
only c is correct

Ans 10:

Class : Class 5

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 6

Ans 2:

Class : Class 7

Ans 3:

Class : Class 6
but rectangle can be cut diagonally somebody pls explain

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Subject :IMO    Class : Class 6

Select the INCORRECT statement.

A Tina had 1556 cm long cloth. She cut 13 m 50 cm from it. The length of cloth left with her is 2.06 m.
B Neetu bought 500 g potatoes, 250 g capsicums, 700 g onions, 500 g tomatoes, 100 g gingers and 300 g radish. The total weight of the vegetables she bought is 2.350 kg.
C Rita got ₹ 500 and spent ₹ 117.35 on stationery items and ₹ 50.75 on eatables. The amount left with Rita is ₹ 331.09.
D Yashika has to cover a distance of 20 km 50 m. She walked 1 km and went by bus for 15 km and hired an auto for rest of the distance. The distance she covered by auto is 4.05 km.


Ans 1:

Class : Class 8

Ans 2:

Class : Class 6

Ans 3:

Class : Class 6

Ans 4:

Class : Class 9

Ans 5:

Class : Class 6
A is the correct answer

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Subject :IMO    Class : Class 6

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 4

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 8
I, II, III, V, VI, VII, VIII, X. They all are symmetrical.

Ans 2:

Class : Class 6
please explain your answer

Ans 3:

Class : Class 9

Ans 4:

Class : Class 10
why not iv?

Ans 5:

Class : Class 6

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Subject :IMO    Class : Class 7

Which of the following steps is INCORRECT, while constructing LMN, right angled at M, given that LN = 5 cm and MN = 3 cm?
Step 1.MN of length 3 cm.
Step 2.M, draw MX MN. (L should be some where on this perpendicular).
Step 3.N as centre, draw an arc of radius 5 cm. (L must be on this arc, since it is at a distance of 5 cm from N).
Step 4.L has to be on the perpendicular line MX as well as on the arc drawn with centre N. Therefore , L is the meeting point of these two and LMN is obtained.

A Only Step 4
B Both Step 2 and Step 3
C Only Step 2
D None of these


The answer should be a as he has not mentioned that LM is drawn.Step 4 should also contain that

Ans 1:

Class : Class 10

Ans 2:

Class : Class 3
could you answer/ explain this??????

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Subject :IMO    Class : Class 2

Ans 1:

Class : Class 7
ok

Ans 2:

Class : Class 7

Ans 3:

Class : Class 7

Ans 4:

Class : Class 7

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Subject :IMO    Class : Class 2

Ans 1:

Class : Class 7
what is 90-50=?

Ans 2:

Class : Class 7
Sorry friends.

Ans 3:

Class : Class 7
bye>stamp.

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 7
51

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