International Maths Olympiad Forum By SOF Olympiad Trainer - Page 2

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Adhiraj Singh from TSRS, Gurugram

Subject :IMO Class : Class 6

Find the values of x, y and z respectively.

A1, 9, 1
B2, 9, 2
C9, 1, 9
D9, 2, 1

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Ishani from St. Mary's Sr.Sec. school, bazpur

Subject :IMO Class : Class 5

In 189485, the value of 8 in the ten thousand's place is _______times the value of 8 in the ten's place.

A 10
B 100
C 1000
D 10000

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Sashha Chakrabarty from Vidyashilp Academy, Bangalore

Subject :IMO Class : Class 8

Both a and b vary inversely with each other, when a = 6 and b = 21, then which of the following is a possible pair of corresponding values?

A12 and 7
B9 and 14
C18 and 14
D12 and 18

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Keshav Sinha from St. Mary Sr. Sec. School Mayur Vihar Phase-3 , Delhi

Subject :IMO Class : Class 8

The sum of the interior angles of a polygon is 1440°. Find the number of sides of the polygon.

A14
B12
C10
D5

correct answer is 6: 1440-360=1080180n=1080, n=1080/180, n=6

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Srivallabh A from NPS Kengeri, Bangalore

Subject :IMO Class : Class 7

The ratio of the present ages of two brothers is 1 : 2 and 5 years back, the ratio was 1 : 3. What will be the ratio of their ages after 5 years?

A2 : 5
B5 : 2
C3 : 5
D5 : 3

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Saar G from Kothari International School, Delhi

Subject :IMO Class : Class 4

Sanya went to her friend’s house at 9 : 45 am. She came back home in 180 minutes. If the given clock shows the time when she came back home, then which of the following options is correct?

AClock is 15 minutes slow.
BClock is 30 minutes slow.
CClock is 15 minutes fast.
DClock is 30 minutes fast.

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Aayush Mukherjee from Bhavan's Gangabux Kanoria Vidyamandir, Kolkata

Subject :IMO Class : Class 7

Simplify : 36²(2³ × 24²)³ ÷ 27³(3² × 8⁴)²

A
B
C
DNone of these

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Saumya from Allen house, VASUNDHRA SECTOR 1

Subject :IMO Class : Class 4

Priya, Payal and Kirti bought m of ribbon for decorating the birthday present for Raman. What is the total length of ribbon they bought?

A
B
C
D

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Vishesh Pandey from K V DoomDooma, Tinsukia

Subject :IMO Class : Class 8

The value of

A
B
C
D

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Shivani from DPS North school , Bangalore

Subject :IMO Class : Class 6

Which of the following statements is/are true?
(i) The quadrilateral in which only one pair of opposite sides is parallel, is a trapezium.
(ii) There are 7 right angles in one and half of a revolution.

AOnly (i) is true.
BOnly (ii) is true.
CBoth (i) and (ii) are true.
DNeither (i) nor (ii) is true.

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