International Maths Olympiad Forum By SOF Olympiad Trainer

Shriya Sreekrishna from BLUEBELLS SCHOOL INTERNATIONAL, New Delhi

Subject :IMO Class : Class 5

If in each of the following number the first and second digits are interchanged, then which will be the third highest number?

489 541 654 953 783

A489
B541
C654
D953

Ans 1:

ARNAV GARG from PRUDENCE SCHOOL, New Delhi

Class : Class 9

Ans 2:

Debarpan Das from Delhi Public School , Durgapur

Class : Class 6

Ans 3:

Gauri Singh from St. John's School, Marhauli, Varanasi

Class : Class 8

953

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manya12 from sri sankara senior secondary school, chennai

Subject :IMO Class : Class 4

135 hours=

Ans 1:

AYUSH SINGH from ryan international school, Mumbai

Class : Class 5

It is equal to 5 days, 15 hours

Ans 2:

AYUSH SINGH from ryan international school, Mumbai

Class : Class 5

It is equal to 5 days 15 hours

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swagat sibsshish from davpublic school cuttack, Cuttack

Subject :IMO Class : Class 6

Which pair of figures shows a reflection over the line segment ?

(A)

(B)

(C)

(D)
what do you think

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is D.

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Devansh123 from D.S.B INTERNATIONAL PUBLIC SCHOOL, Rishikesh

Subject :IMO Class : Class 8

When simplified, (x^{- 1} + y^{- 1})^{- 1}is equal to ____.

(A) x + y

(B)

(C) x y

(D)
i could not understand it. plz solve and inform by another method

Ans 1:

sai aashirwad from geethanjali vidyalaya, Bengaluru

Class : Class 8

((x^-1)+(y^-1))^-1=((1/x)+(1/y))^-1 =((x+y)/xy)^-1=xy/(x+y)

Ans 2:

Mayank from D. S. M. School for Excellence , Jamshedpur

Class : Class 8

a) x+y

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Devansh123 from D.S.B INTERNATIONAL PUBLIC SCHOOL, Rishikesh

Subject :IMO Class : Class 8

The value of is ____.

(A) 2

(B) 10/3

(C) 2¹⁰⁰⁰ + 1

(D) 10

Ans 1:

swagat sibsshish from davpublic school cuttack, Cuttack

Class : Class 8

pls make me understood ..its too difficult

Ans 2:

Oliva Rajguru from Siliguri girls' high school, Siliguri, Darjeeling ;West bengal

Class : Class 8

2^2001+2^1999/ 2^2000-2^1998 (first take common of 1999 and 1998) =2^1999 (2^2+1)/ 2^1998 (2^2-1) =2^1999-1998×{(4+1)/(4-1) =2×5/3=10/3 ans.. (B)

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Kartavya Kalia from Akshara International School, Pune

Subject :IMO Class : Class 2

THE OLYAMPAID CAN STARTED FOR NEW GRADES

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Karmanya Gupta from DPS, Udaipur

Subject :IMO Class : Class 5

A tailor had a piece of cloth 8 m long. He cut 3 smaller pieces of cloth each m from it. How many metres of cloth were left ?

(A)

(B)

(C)

(D)

Ans 1:

Avaneesh Sawant from Vissanji academy , Mumbai

Class : Class 6

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Karmanya Gupta from DPS, Udaipur

Subject :IMO Class : Class 5

The given table shows the prices of 3 different types of eggs. of the eggs Priyanka bought were chicken eggs. of them were century eggs and the rest were quail eggs. If Priyanka spent a total amount of Rs 6.50 on the chicken and century eggs, how much did she spend on the quail eggs ?

Chicken eggs	20 paise each
Century eggs	90 paise each
Quail eggs	5 paise each

(A) Rs 1.25

(B) Rs 1.40

(C) Rs 1.65

(D) Rs 1.80

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is A.

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Karmanya Gupta from DPS, Udaipur

Subject :IMO Class : Class 5

Direction : Study carefully and answer the following questions.

Kirti spent Rs 281. 90 on a total of 27 packets of Australian Yummy and Healthy rice. Calculate the number of weeks her family would take to finish the rice if they eat kilogram of rice every day.