International Maths Olympiad Forum By SOF Olympiad Trainer - Page 604
  1. Home
  2. /  Forum

User Forum

Ask Your Question
ansh rai from delhi public school, Bhilai
Subject :IMO    Class : Class 5

Ans 1:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
Answer is D) 3.

Ans 2:

Amar Ghatak from Maha Rishi Vidyamandir , Kolkata
Class : Class 7

Ans 3:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
https://www.sofolympiadtrainer.com/forum/user/467395 (i.e. ADMIN) from https://www.sofolympiadtrainer.com/user/home/usertestDetailsOfTest

Ans 4:

Devanshi from TSMS, Noida
Class : Class 8

Ans 5:

Aryan Bomanwar from Chirec international School, HYDERABAD
Class : Class 6

Ans 6:

Rudra Tripathi from DPS Noida, Noida
Class : Class 10
Sir please say the answer .

Ans 7: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Kindly mention your query

Ans 8:

Amar Ghatak from Maha Rishi Vidyamandir , Kolkata
Class : Class 7

Post Your Answer

AARNA Kapse from The swaminarayan school, Nagpur
Subject :IMO    Class : Class 2

Ans 1:

Anshul Sameer Darne from Ryan International School, Masdar
Class : Class 6
c is answer

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Kindly mention your query

Ans 3:

Anshul Sameer Darne from Ryan International School, Masdar
Class : Class 6
c is the answer

Post Your Answer

AARNA Kapse from The swaminarayan school, Nagpur
Subject :IMO    Class : Class 2

Ans 1:

Darsh from Bkvv, Nagpur
Class : Class 2
225

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Please mention your query

Ans 3:

Arjun Gourineni from CHIREC International School, Hyderabad
Class : Class 7
Please mention your query

Post Your Answer

Sneha Sarkar from South city international school, Kolkata
Subject :IMO    Class : Class 2

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Here, 462 + 199 = 661 So, the correct match is 462 + 199 - 661, which is option B.

Post Your Answer

Aastha Sawlani from Bangkok Patana School, Bangkok
Subject :IMO    Class : Class 8

Ans 1:

Rashmi Goyal from ,
Class :
Find the divisor given that the dividend is2200 remainder is 13 and the divisor is one third of the quotient

Ans 2:

Rashmi Goyal from ,
Class :
Find the divisor given that the dividend is2200 remainder is 13 and the divisor is one third of the quotient

Post Your Answer

UMA t.urlakshmi from sri chaitanya, Hyderabad
Subject :IMO    Class : Class 10

Ans 1:

Sahasra Shanker from KV IIT, Chennai
Class : Class 6
help

Post Your Answer

Manit Aggarwal from St. Patricks Academy Bengaluru, Bangalore
Subject :IMO    Class : Class 2

Ans 1:

Ashima Das from VEMS, Buhubaneswar
Class : Class 2
B

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Kindly mention your query

Post Your Answer

Abhi from Shimoga school, smg
Subject :IMO    Class : Class 5

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Here, the answer is A. 7 tenths is 7 over 10, if you divide 7 by 10 you get 7 tenths as a decimal which is 0.7 Similarly, 45 tenths is 45 over 10,if you divide 45 by 10 you get 45 tenths as a decimal which is 4.50 21 hundredths is 21 over 100, if you divide 21 by 100 you get 21 hundredths as a decimal which is 0.21 Hence, the sum of 7 tenths, 21 hundredths and 45 tenths is (0.7 + 0.21 + 4.50) = 5.41

Post Your Answer

Raghav Tyagi from birla vidya niketan, new delhi
Subject :IMO    Class : Class 8

Ans 1:

from ,
Class : Class 9
a2 - 13a + 30 = a2 + 4a + 4 a - 10 a + 2 => (a2 - 13a + 30)(a + 2) = (a2 + 4a + 4)(a - 10) => a3 + 2a2 - 13a2 - 26a + 30a + 60 = a3 - 10a2 +4a2 + 4a - 40 => - 11a2 + 4a + 60 = - 6a2+ 4a - 40 => - 11a2 + 6a2 + 60 + 40 = 0 => - 5a2 + 100 = 0 => 5a2 = 100 => a2 = 20 => a = √20 Insert the value of'a'and you will get the answer.

Ans 2:

Harsh Shukla from DPS Bangalore East, Bengaluru
Class : Class 9
This question is completely wrong as when we factorise (a^2-13a 30) and (a^2 4a 4), we get (a-3)(a-10) and (a 2)^2 respectively. After calculating more, we get a-3=a 2 which has no solution as -3≠2

Ans 3:

from , Kalyan
Class : Class 9
i got 5

Ans 4:

Rijrashwa Sreejith from Devamatha C M I Public School, Thrissur
Class : Class 4
The question is wrong.If A is the answer, solving this quadratic eqn, we get a=10 or -2since the answer is a simplified form of the question, these values of a should also hold for question also. But if we put these vales in the question either LHS or RHS denominator will become 0 making it undefined.the actual procedure is to factorize.=> [(a-3)(a-10)]/(a-10)=[(a 2)(a 2)]/(a 2)=> a-3 = a 2=> -3 = 2 which is absurd. so the question is wrong.

Ans 5:

Prachi from Holy Child Public school, Faridabad
Class : Class 10

Ans 6:

Ayush Gorain from Sarala Birla Public School, Ranchi
Class : Class 8
By factorization process, we get a-3 = a 2, which is in fact a linear equation without a solution. On the other hand, by solving through cross multiplication method (as shown in the solution of this question), we get a²-8a-20 = 0, or (a 2)(a-10) = 0. By solving the quadratic equation, we get a as (-2) or (10), which, upon substituting in the formula given in the question, doesn't satisfy the equation. This is because the equation in the above question isn't even actually correct, as (a-3) is not equal to (a 2), as that would lead to the statement: 5 = 0, which is obviously not true.

Ans 7:

VIBHU SHARMA from Mount St Mary, NEW DELHI
Class : Class 8

Ans 8:

Ankit kumar Jha from Ryan International School , Ghaziabad
Class : Class 9
but that is not what we want

Post Your Answer

Kavish Marwah from Pawar Public School Chandivali, Mumbai
Subject :IMO    Class : Class 4

Ans 1:

Ashwak from Cambridge, Jalandhar
Class : Class 9
A

Ans 2:

Amarjit Sahu from D.A.V. Public School, Midnapore
Class : Class 6
A

Ans 3:

TANVI D MARGHADE from PODAR INTERNATIONAL SCHOOL POWAI, MUMBAI
Class : Class 6

Ans 4:

Nirvi Pal from jasudben ML School, mumbai
Class : Class 5
a

Ans 5:

Nirvi Pal from jasudben ML School, mumbai
Class : Class 5
aasefrfefsaxcfbt

Ans 6:

Khanak Jha from Prime Academy, Mumbai
Class : Class 4

Ans 7:

Devansh from Dps chandigarh, Chandigadh
Class : Class 3

Ans 8:

Rajkishore Gupta from City Pride, Pune
Class : Class 4

Ans 9:

Yatindra G from SBOA, Chennai
Class : Class 4
A is the answer.

Ans 10:

shubhavi Dhondge from NPS, Banagalore
Class : Class 9

Ans 11:

BIR from LOTUS VALLEYINTERNATIONAL SCHOOL, NOIDA
Class : Class 4

Post Your Answer