International Maths Olympiad Forum By SOF Olympiad Trainer - Page 80

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Dev from Ambassador , Dubai

Subject :IMO Class : Class 7

In a ΔABC, which of the following conditions holds?

AAB - BC > CA
BAB + BC < CA
CAB - BC < CA
DAB + CA < BC

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Sudhi from D.P.S Noida, Noida

Subject :IMO Class : Class 4

How many unit cubes are there in the given figure?

A12
B15
C16
D10

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Nitai Pandey from DAV CENTENARY PUBLIC SCHOOL KUTESHWAR, KATNI

Subject :IMO Class : Class 6

Sneha is 20 years old. 10 years ago, Tarun was 2x times older than Sneha. What will be their total age after 5 years from now?

A(20 + x) years old
B(40 + 30x) years old
C(40 + 20x) years old
D(15 + 10x) years old

Either the word "older" should be deleted to make option C correct or the answer will be (50 20x) years

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Yahvi Sahay from D P S electronic city, Bengaluru

Subject :IMO Class : Class 7

In the given figure, AB ⊥ BC, BD ⊥ AC and CE bisects ∠C. If ∠A = 30°, then what is the measure of ∠CED?

A30°
B60°
C45°
D65°

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LAVANYA DADHWAL from BLOOM PUBLIC SCHOOL, South West Delhi

Subject :IMO Class : Class 7

Find the sum of order of rotational symmetry of the given figures.

A5
B3
C4
DNone of these

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Anusha from , faridabad

Subject :IMO Class : Class 9

Match the following.

AP-3; Q-1; R-2; S-4
BP-3; Q-1; R-4; S-2
CP-1; Q-3; R-2; S-4
DP-1; Q-3; R-4; S-2

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Bhavya Gurjar from G D Goenka Public School, Lucknow

Subject :IMO Class : Class 6

Which of the following options is true?
P : –12 + (–15)
Q : –16 – (12)
R : –14 – (–12)

AQ > R > P
BP + Q > R
CR > P > Q
DP < Q < R

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Uday Raj Aggarwal from Sardar Patel Vidyalaya, Delhi

Subject :IMO Class : Class 8

If A and B can do a piece of work in 8 days, B and C in and A and C in 6 days. Find the required number of days, if they work altogether to finish the work.

A
B
C
D

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Arkajyoti Das from techno, Cooch Behar

Class : Class 9

wrong

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Ayansh Modi from Air Force Bal Bharti, Delhi

Subject :IMO Class : Class 4

What will you get, if you round off the greatest 5-digit even number to the nearest hundreds?

A100000
B10000
C99000
D99900

that is wrong it should be A

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Vaishnavi Sahu from St Johns English School and Junior College, Chennai

Subject :IMO Class : Class 3

If Mohit went to office only on even dates in August 20XX, then for how many days does he go for work? (Assume that every Sunday is a holiday.)

A15
B13
C17
D14

can anyone please explain

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Vaishnavi Sahu from St Johns English School and Junior College, Chennai

Class : Class 4

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