International Maths Olympiad Forum By SOF Olympiad Trainer

z from DPS, NOIDA

Subject :IMO Class : Class 1

In the year 2012, February had ______ days.

A30
B31
C29
D28

bat

Ans 1:

vamsika from Yuva Bharathi Public school, coimbatore south

Class : Class 5

How to calculate leap years?

Ans 2:

vamsika from Yuva Bharathi Public school, coimbatore south

Class : Class 5

HOW TO CALCULATE LEAP YEAR?

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mall from pcs, mumbai

Subject :IMO Class : Class 6

Which of the following statement is true?
(i) A sector is the region in the interior of a circle enclosed by an arc on one side and a pair of radii on the other two sides.
(ii) A segment of a circle is region in the interior of the circle enclosed by an arc and a chord.

ABoth (i) and (ii)
BOnly (i)
COnly (ii)
DNeither (i) nor (ii)

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Ans 1:

Vrishak from Delhi public school warangal, Warangal

Class : Class 6

A is the answer

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Arjun from DAIS, Mumbai

Subject :IMO Class : Class 6

Which of the following options satisfy the given conditions?
Fig. (i)     Faces : 6            Fig. (ii)     Faces : 5
                Edges : 12          Edges : 9
                Vertices : 8         Vertices : 6

A
B
C
D

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Siddiqua Modi from gems modern academy, udaipur

Subject :IMO Class : Class 2

Select the odd one out

A
B
C
D

answer should be 'c'

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Ibrahim Ahmad from Apeejay School Saket, New Delhi

Subject :IMO Class : Class 7

Given below a question followed by three statements. You have to study the question and the statements and decide which of the statement(s) is/are necessary to answer the question.
What is the principal sum?
I. The sum amounts to Rs 690 in 3 years at S.I.
II. The sum amounts to Rs 1150 in 5 years at S.I.
III. The rate of interest is 5% p.a.

AI and III only
BII and III only
CI and II only
DAny two of the three

I think it is not the D part as it does'nt make any sense

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Ans 1:

Amrik Pal from Kendriya Vidyalaya DRDO, Bangalore

Class : Class 6

right

Ans 2:

SOUVAGYA SAHA from De Nobili School, DHANBAD

Class : Class 10

Ans 3:

Keshav from Step by step school sawai madhupur, Sawai madhopur

Class : Class 7

i did not remember amswer

Ans 4:

Ibrahim Ahmad from Apeejay School Saket, New Delhi

Class : Class 6

I think part D does not make any sense

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Can I get Rank 35 darryl from Global Indian international school, Brawl stars

Subject :IMO Class : Class 7

The mean of three numbers is 40. All the three numbers are different natural numbers. If lowest is 19, what could be highest possible number of remaining two numbers?

A81
B40
C100
D71

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Ans 1:

Sujal Gaglani from Vidya Vikasini School ICSE, Vasai

Class : Class 8

Ans 2:

Paarth Vashistha from Kunskapsskolan Gurgaon , Gurgaon

Class : Class 8

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Vedant Malhotra from Delhi Public school, Bangalore

Subject :IMO Class : Class 7

The standard from of 2 million × 15 lakh is ______ .

A3.0 × 10¹²
B3.0 × 10¹³
C3.0 × 10¹⁴
D3.0 × 10¹⁵

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Sarbari Pal from DPS FARIDABAD, Faridabad

Subject :IMO Class : Class 9

If a straight line falling on two straight lines makes the interior angles on the same side of it taken together less than two right angles, then the two straight lines, if produced indefinitely, meet on that side on which the sum of angles is ______ two right angles.

A Equal to
B More than
C Less than
D Can't be determined

pls help

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Ans 1:

Aakarsh mishra from Oakridge International School, Hyerabad

Class : Class 9

Ans 2:

Arnav Ranka from Gyan Bharati School, Saket, New Delhi

Class : Class 9

Ans 3:

Abhay yadav from Blossom Senior Secondary School, Gorakhpur

Class : Class 10

A

Ans 4:

sauradeep from j v m Shyamali , ranchi

Class : Class 10

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Vaastav Mishra from BMPS Taxsila, Bhubaneswar

Subject :IMO Class : Class 9

O is the centre of the circle having radius 5 cm. AB and AC are two chords such that AB = AC = 6 cm. If OA meets BC at P, then OP = _______.

A3.6 cm
B1.4 cm
C2 cm
D3 cm

anyone know how to do this?

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Ans 1:

sankalp from Gyan Bharti School, Saket, Delhi

Class : Class 10

Please upload soln.

Ans 2:

Diptansu Biswal from kv ins chilka, balugaon

Class : Class 9

Answer

Ans 3:

Satyam Jha from , Muzaffarpur

Class : Class 9

koi solution dedo bhais ki....

Ans 4:

sankalp from Gyan Bharti School, Saket, Delhi

Class : Class 10

BRUH

Ans 5:

KETAKI SUBHASH GHATOL 2 from CSA Satara, Satara

Class : Class 10

Ans 6:

Neharrika SV from SOI, Bangalore

Class : Class 10

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Rajarshee Mitter from Adamas International School, Kolkata

Subject :IMO Class : Class 8

If a^x = b^y = c^z and b² = ac, then y equals

A
B
C
D

I kinda need help with this sum, i use the formula a^x = b^y = c^z = k, but is there any other simple way to do this particular sum? I have done sums like these before but this one is a little tricky

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Ans 1:

Ojas Purankar from Blue Ridge Public school, Pune

Class : Class 8

Ans 2:

Aham from vibgyor high, Bangalore

Class : Class 8

Ans 3:

Athulya Sunil Menon from DPS MIS Doha, Mumbai

Class : Class 9

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