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aniya from Greenwood High International School Bengaluru, Bengaluru
Subject :IMO    Class : Class 4

Ans 1:

Vivaan Telang from Vibgor High, Mumbai
Class : Class 7
common factor is 5,10

Ans 2:

Student from School, City
Class : Class 8

Ans 3:

Pranav from Delhi Public School, Bangalore
Class : Class 4
The common factors of 40 and 70 are 2,5 and 10 which are same as common factors of 10 and 40. (2,5,10) and hence answer B is correct.

Ans 4:

Deepak Vijayaragavan from Greenwood High, Bengaluru
Class : Class 4

Ans 5:

sauradeep from j v m Shyamali , ranchi
Class : Class 10
SORRY THE ANSWER IS A

Ans 6:

R JOHNSTEVEN from MANGADU PUBLIC SCHOOL , Chennai
Class : Class 4
Common factor is 5,10

Ans 7:

Sayan Duary from Vidyasagar Shishu Niketan, Paschim Medinipur
Class : Class 8

Ans 8:

atharva from don bosco highschool oros, kudal
Class : Class 4
Sorry I wanted to type option number A.

Ans 9:

Aarya Ranjan from chrysalis, bangalore
Class : Class 4
the answer is 5 and 10

Ans 10:

Sarthak yadav from RPS, Mahendragarh
Class : Class 9
common factors are 5 and 10

Ans 11:

atharva from don bosco highschool oros, kudal
Class : Class 4
Common factors are 5 and 10 ie option B

Ans 12:

sauradeep from j v m Shyamali , ranchi
Class : Class 10
common factor is 5,10

Ans 13:

Sakesh from SBOA, Tamil Nadu
Class : Class 6
actually,they are asking which one has the same relationship as 40 and 70 which is 10 and 40 so, B is the correct answer

Ans 14:

Hamsini from Yagappa International School, Thanjavur
Class : Class 4
answer is 10 and 5

Ans 15:

sauradeep from j v m Shyamali , ranchi
Class : Class 10

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Sankarshana from Amara Jyothi Public School, Bengaluru
Subject :IMO    Class : Class 4

Ans 1:

Vrushti from swami vivekanand english primary school, Mumbai
Class : Class 4
Riya is younger to Raj therefore she is also younger to Shilpa. let Raj be 'x' . Shilpa = 4x and Riya is x-6. {x+ 4x + x-6 = 72} or 6x - 6 =72 or 6x = 78 or x= 13

Ans 2:

Kushal from Chirec, Hyderabad
Class : Class 7
45 years

Ans 3:

aritroray from Chirec International School, Hyderabad
Class : Class 8
Raj's age = x. x + 4x + ( x - 6 ) = 72, or 5x + ( x - 6 ) = 72, or 5x + x - 6 = 72, or 6x - 6 = 72, or 6x = 72 + 6, or 6x = 78 or x = 78/6 or x = 13, so Raj is 13 years old. Shilpa is 13 x 4 = 52 years old. Riya is 13 - 6 = 7 years old. Shilpa is 52 - 7 = 45 years older than Riya, so answer is B.

Ans 4:

Admin from SOF, Noida
Class : Class 10
Answer: D
Solution
Let age of Shilpa, Raj and Riya be S, R, and Ri respectively
Then
S = 4R
Ri = R - 6
S + R + Ri = 72
or
4R + R + R - 6 = 72
6R = 66
R = 11
S = 44
Ri = 5
So Shilpa is (44- 5) 39 years older than Riya

Ans 5:

Soham De from DPS, Nerul, Mumbai
Class : Class 5
The step written by you 4R + R + R - 6 = 72 6R = 66 This step is wrong. As 6 will be added to 72 and NOT SUBTRACTED. hence, 6R = 78

Ans 6:

Vrushti from swami vivekanand english primary school, Mumbai
Class : Class 4
let Raj be = x yrs, Shilpa = 4x, Riya = x-6 therefore x + 4x + x-6 = 72 or 6x = 78 or x = 13 This means Raj = 13 yrs, Shilpa = 4 x 13 = 52 yrs, and Riya = 13 - 6 = 7yrs thus Shilpa is 45 yrs older to Riya (52-7 = 45)

Ans 7:

Admin from SOF, Noida
Class : Class 10
Shilpa_Age = 4* Raj_Age --- (1) Riya_Age = Raj_Age - 6 --- (2) Shilpa_Age + Raj_Age + Riya_Age = 72 This can be rewritten as, (from (1) and (2)) 4*Raj_Age + Raj_Age + Raj_Age - 6 =72 6*Raj_Age = 78 Raj_Age = 78/6 = 13 Therefore, Shilpa_Age = 4*13 = 52 Riya_Age = 13 - 6 = 7 Therefore, Shilpa is 52 - 7 = 45 years elder than Riya Option (B)

Ans 8:

Soham De from DPS, Nerul, Mumbai
Class : Class 5
yes i am too getting 45.

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ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

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from , Hyderabad
Subject :IMO    Class : Class 3

Ans 1:

Admin from SOF, Noida
Class : Class 10
Answer : D
There was a mistake in option B which has been corrected.

Solution
2 mm = .2 cm
42cm + 2 mm = 42cm + .2cm = 42.2cm

Ans 2:

chaitanya from jasudben ml school, Mumbai
Class : Class 3
D

Ans 3:

Admin from SOF, Noida
Class : Class 10
Answer : D
There was a mistake in option B which has been corrected.

Solution
2 mm = .2 cm
42cm + 2 mm = 42cm + .2cm = 42.2cm

Ans 4:

Vikram from AVM, Mumbai
Class : Class 5
I had the same problem. 42.2 cm is given twice in the options and the answer is marked wrong if u choose one of them (I forget which one). Pls rectify this error.

Ans 5:

Admin from SOF, Noida
Class : Class 10
Answer : D
There was a mistake in option B which has been corrected.

Solution
2 mm = .2 cm
42cm + 2 mm = 42cm + .2cm = 42.2cm

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Amruta Nasikkar from bgs nps, bangalore
Subject :IMO    Class : Class 4

Ans 1:

Vrushti from swami vivekanand english primary school, Mumbai
Class : Class 4
Ans is A Factors of 36 & 96 are 2,3,6 &12 from the above three numbers are multiples of 3 i.e 3, 6, 12

Ans 2:

Sunita from Dps, Greater Noida
Class : Class 9
Answer : A Solution 3,6,12 are three common factors of 36 and 96 which are also multiple of 3. Hence the answer is 3 numbers. The questions is 'how many numbers' and not 'which numbers'.

Ans 3:

MAHADEVAN SANJU from Loyola School, Trivandrum
Class : Class 5
No,its 3. The common factors are 1,2,3,4,6,12. But the factors that are also multiples of 3 are 3, 6 and 12

Ans 4:

adwaita from DPS NOIDA, Noida
Class : Class 4
so many

Ans 5:

Admin from SOF, Noida
Class : Class 10
Answer : A
Solution
3,6,12 are three common factors of 36 and 96 which are also multiple of 3.
Hence the answer is 3 numbers.
The questions is 'how many numbers' and not 'which numbers'.

Ans 6:

shiven jindal from sms janakpuri delhi, New Delhi
Class : Class 8
factors of 36 are 1,2,3,4,6,9,12,18,36 factors of 96 are 1,2,3,4,6,8,12,24,32,48,96 common 1,2,3,4,6,12 multiple of 3 - 3,6,12 ans is A

Ans 7:

Admin from SOF, Noida
Class : Class 10
Answer : A
Solution
3,6,12 are three common factors of 36 and 96 which are also multiple of 3.
Hence the answer is 3 numbers.
The questions is 'how many numbers' and not 'which numbers'.

Ans 8:

Aviral Shukla from Apeejay School Sheikh Sarai, New Delhi
Class : Class 10
I think that 3 and 6 both are factors of 36 and 96 and multiple of 3

Ans 9:

sandynhpc@gmail.com from Kendriya Vidyalaya Sector12 Dwarka, New Delhi
Class : Class 5
3

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Amruta Nasikkar from bgs nps, bangalore
Subject :IMO    Class : Class 4

Ans 1:

Mayank Raj from Litera velly, Patna
Class : Class 4

Ans 2:

Ria Chaddha from GGS, noida
Class : Class 4
The correct answer must Hospital as 3/4 turn clockwise takes to the Cinema and Hospital is opposite of the Cinema. The answer will cinema if she takes anticlockwise turn instead of clockwise

Ans 3:

jefrin jabez christian from cs academy, erode
Class : Class 5
may i please know how cinema hall is anti clockwise

Ans 4:

Sarah Ishika Dowerah from Delhi Public School, Numaligarh
Class : Class 8
cinema hall

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Amruta Nasikkar from bgs nps, bangalore
Subject :IMO    Class : Class 4

Ans 1:

vaibhavsaha3299 from Calcutta International School, Kolkata
Class : Class 10
Each Albrigi tank meets an operational philosophy based on nearly thirty years of experience in the production of stainless steel systems, which has guided the company towards the application of the most modern technologies and the most advanced construction techniques. The high quality standards, supported by the almost entirely robotized production structure, complete the maximum precision of processing and finishing. All Albrigi Tecnologie tanks are fully integrated with AISI 304, AISI 304L, AISI 316 and AISI 316L austenitic steel and comply with the second highest quality standard and the most restrictive norms of the sector (GMP, FDA, 3A). These processes are added to the guarantee of the steel, a particular effectiveness and speed in the operations of maintenance and cleaning, according to the legislation. In the last ten years Albrigi Tecnologie has specialized in the food sector in particular, providing high quality systems for famous brands in the industry such as Aia, Barilla and Zuegg. Its geographical location, in the heart of Valpantena, which is part of the so-called enlarged Valpolicella, where Amarone and Recioto is produced, has made it possible, however, that Albrigi Tecnologie immediately developed an attention for the wine sector, so much so that over the years it has become one of the most successful companies in Italy also in the construction of registered plants for the storage and fermentation of wines .. The owner is Stefano Albrigi who, after a long experience in the sector, has understood the importance of investing in technological development and in in-house professional skills. For this reason, around 35% of turnover is spent on research and business improvements. For Albrigi Tecnologie the search for ever new solutions is in the first place. Among the innovations recently proposed at the latest trade fairs (Vinitaly, Simei, Sitevi), we recall Il Archimede System, control and vinification system for automation in the cellar, Picturetank and Colourtank, for a touch of liveliness in the cellar and Polifascia, economic and innovative system, an exclusive Albrigi patent to condition your existing tanks

Ans 2:

Prisha from Podar International School Thane, Thane
Class : Class 5
ACCORDING TO ME THE ANSWER SHOULD BE 3144 m,SINCE, 1300 m 272 m = 1572 m and 1572 m *2= 3144 m.PLEASE CHECK THE ANSWER.

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Rikhil Taneja from IVY World School, Jalandhar
Subject :IMO    Class : Class 6

The coprime numbers from the following pairs, is

(A) 7 and 63

(B) 36 and 25

(C) 35 and 21

(D) 63 and 81


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Ans 1:

abhinav from fitjee world school, Hyderabad
Class : Class 8
36 and 25

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Ritisha Kapur from BlueBells School Internnational, New Delhi
Subject :IMO    Class : Class 5

Ans 1:

kushal from Greenwood High, Bangalore
Class : Class 9
This is a wrong question.I calculated and got 17640.

Ans 2:

Rudranil from Kendriya Vidyalaya no.2 Ishapore, Kolkata
Class : Class 6
D 1200

Ans 3:

Vijayendra from Narayana E Techno, Bengaluru
Class : Class 5
i guess D 1200 but i don't know properly

Ans 4:

Sumit G from Greenwood High International, Bengaluru
Class : Class 8
The question is wrong.

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Revanth from New Horizon Gurukul, Bengaluru
Subject :IMO    Class : Class 6

Ans 1:

Pragya Mahajan from BCM Arya Model Sr Sec School, Ludhiana
Class : Class 8
ANS.IS D.

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