National Science Olympiad Forum By SOF Olympiad Trainer - Page 715
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NIRMAY JOSEPH from St Columba's School, New Delhi , New Delhi
Subject :NSO    Class : Class 4

Ans 1:

Tvisha Bindal from Manav Rachna International School Sector 14, Faridabad
Class : Class 4
is simple with the solution

Ans 2:

mahek peswani from jai hind primary school pimpri, pimpri
Class : Class 5

Ans 3:

ADITYA ROY from VIDYASAGAR SHISHU NIKETAN, MEDINIPUR
Class : Class 5
what is the real answer?

Ans 4:

ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Class : Class 10
c

Ans 5:

Dheer Pandey from Sentia The Global School, Hyderabad
Class : Class 10
the answer is a.

Ans 6:

Sonu Batra from modern dps faridabad, Faridabad
Class : Class 8
the answer is a . it's simple with the solution

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Nirabhra from bluebells international, New Delhi
Subject :NSO    Class : Class 7

Ans 1:

Ishita Gupta from Greenwood High, Bangalore
Class : Class 7
I think the answer is (b)

Ans 2:

Neevedita Singh from Auxilium Convent School Dum Dum, Kolkata
Class : Class 7
its option D

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AKSHITA.KRISHNAN from DPS Noida, Noida
Subject :NSO    Class : Class 3

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NIRMAY JOSEPH from St Columba's School, New Delhi , New Delhi
Subject :NSO    Class : Class 4

Ans 1:

Divyamsh from The Sky World School, Panchkula
Class : Class 5

Ans 2:

Divyamsh from The Sky World School, Panchkula
Class : Class 5

Ans 3: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

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NIRMAY JOSEPH from St Columba's School, New Delhi , New Delhi
Subject :NSO    Class : Class 4

Ans 1:

Dhriti yamana from GEMS Modern Academy, Dubai
Class : Class 4
The answer is c

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

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NIRMAY JOSEPH from St Columba's School, New Delhi , New Delhi
Subject :NSO    Class : Class 4

Ans 1:

from Podar International School icse, Aurangabad
Class : Class 6

Ans 2:

ishit from EUROSCHOOL THANE, THANE WEST
Class : Class 7
Can you tell the answer to this question

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Kavita G from sri chaitanya techno school, Bengaluru
Subject :NSO    Class : Class 6

Ans 1:

Shaunak Mahapatra from Mount Litera Zee School, Contai
Class : Class 7
Here opt c is correct as if we add all the digits of the no.s in the opt a , b, and d the result is 29 where opt c gives the result 27. Thus, the odd one is the opt c.

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Nishant Doshi from new era senior secondary school nizampura vadodara, Vadodara
Subject :NSO    Class : Class 5

Ans 1:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
Everyone , pay attention . In this question , the BODMAS rule ( Bracket , Off , Division , Multiplication , Addition , Subtraction ) is used . Let me explain it . First transform all the signs . The ans . comes 36 - 12 -:- 4 6 -:- 2 x 3 . First we have to do division , then multiplication , then addition and then subtraction . Therefore :-36 - 12 -:- 4 6 -:- 2 x 3 \l/36 - 3 3 x 3 \l/ 36 - 3 9 \l/ 36 - 12 \l/ 24

Ans 2:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
Everyone , pay attention . In this question , the BODMAS rule ( Bracket , Off , Division , Multiplication , Addition , Subtraction ) is used . Let me explain it . First transform all the signs . The ans . comes 36 - 12 -:- 4 6 -:- 2 x 3 . First we have to do division , then multiplication , then addition and then subtraction . Therefore :-36 - 12 -:- 4 6 -:- 2 x 3 \l/36 - 3 3 x 3 \l/ 36 - 3 9 \l/ 36 - 12 \l/ 24

Ans 3:

CHEERANJIT MOHANTA from MATHOPE, BHUBANESWAR
Class : Class 5
how? can not understand.

Ans 4:

Siddhant Singhania from AGCS purulia, Puruliya
Class : Class 7

Ans 5:

Sourav Jena from ODM public school , BHUBANESWAR
Class : Class 4
it is confusing ya

Ans 6:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
Everyone , pay attention . In this question , the BODMAS rule ( Bracket , Off , Division , Multiplication , Addition , Subtraction ) is used . Let me explain it . First transform all the signs . The ans . comes 36 - 12 -:- 4 6 -:- 2 x 3 . First we have to do division , then multiplication , then addition and then subtraction . Therefore :-36 - 12 -:- 4 6 -:- 2 x 3 \l/36 - 3 3 x 3 \l/ 36 - 3 9 \l/ 36 - 12 \l/ 24

Ans 7:

Dushyant Singh from Shri Ram Centennial School, Indore
Class : Class 6
Very confusing.

Ans 8:

Irresh Vijay from NPSI Singapore, Singapore
Class : Class 8

Ans 9:

SRISANTH from Edify, Tirupathi
Class : Class 5
The bodmas rule is sometimes not applicable in some cases and if we use both methods it will take about 8 minutes.I even tested it

Ans 10:

Trideev Reddy Maddirevula from IIPS, Riyadh
Class : Class 7
very confusing

Ans 11:

Haroon T K from Silver Hills public school , Calicut
Class : Class 5

Ans 12:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
I did not write the plus signs . It will be 4 6 , 3 3 and 3 9 .

Ans 13:

PARUL GHARSE from Vibgyor, Mumbai
Class : Class 6
it is really confusing

Ans 14:

Ashee Srivastava from APEEJAY SCHOOL NOIDA , NOIDA
Class : Class 7
very confusing

Ans 15:

Sohan Choudhury from Delhi Public School Electronic City Bengaluru, Bengaluru
Class : Class 6

Ans 16:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
Everyone , pay attention . In this question , the BODMAS rule ( Bracket , Off , Division , Multiplication , Addition , Subtraction ) is used . Let me explain it . First transform all the signs . The ans . comes 36 - 12 -:- 4 6 -:- 2 x 3 . First we have to do division , then multiplication , then addition and then subtraction . Therefore :-36 - 12 -:- 4 6 -:- 2 x 3 \l/36 - 3 3 x 3 \l/ 36 - 3 9 \l/ 36 - 12 \l/ 24

Ans 17:

Shreyansh Gupta from MVN, faridabad
Class : Class 6
not confusing let me explain it so when will we replace the sines it will be like this 36-12 divided by 4 6 divided by 2 multiplied by 3 so when will you solve it you will get the answer

Ans 18:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
Everyone , pay attention . In this question , the BODMAS rule ( Bracket , Off , Division , Multiplication , Addition , Subtraction ) is used . Let me explain it . First transform all the signs . The ans . comes 36 - 12 -:- 4 6 -:- 2 x 3 . First we have to do division , then multiplication , then addition and then subtraction . Therefore :-36 - 12 -:- 4 6 -:- 2 x 3 \l/36 - 3 3 x 3 \l/ 36 - 3 9 \l/ 36 - 12 \l/ 24

Ans 19:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
Everyone , pay attention . In this question , the BODMAS rule ( Bracket , Off , Division , Multiplication , Addition , Subtraction ) is used . Let me explain it . First transform all the signs . The ans . comes 36 - 12 -:- 4 6 -:- 2 x 3 . First we have to do division , then multiplication , then addition and then subtraction . Therefore :-36 - 12 -:- 4 6 -:- 2 x 3 \l/36 - 3 3 x 3 \l/ 36 - 3 9 \l/ 36 - 12 \l/ 24

Ans 20:

Anil sinha from DPS, Chandigarh
Class : Class 4

Ans 21:

Pratyusha Saha from South point school, Kolkata
Class : Class 6

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Nishant Doshi from new era senior secondary school nizampura vadodara, Vadodara
Subject :NSO    Class : Class 5

Ans 1:

Diya Avinash from Treamis World School, Bangalore
Class : Class 6
Option C is the correct answer

Ans 2:

shaun joel dasari from subs, chennai
Class : Class 4

Ans 3:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
How is C the answer? Water has minerals in it. Pls. explain.

Ans 4:

AARNA GOEL from UPTON SCHOOL, ENGLAND
Class : Class 6
as per me d

Ans 5:

Ivan Tyagi from Chirec International School , Hyderabad
Class : Class 8
d

Ans 6:

Syeda Aleeza Zaidi from Somerville school Noida , Noida
Class : Class 5

Ans 7:

Sanskriti Nagar from Rose Bud Academy, khagaria
Class : Class 5
Answer is C

Ans 8:

yuvraj tantia from birla public school, sri ganganagar
Class : Class 5
D is correct

Ans 9:

Archit Sanyal from Manav Rachna International , Gurgaon
Class : Class 5
Ytytytytyt it is c c c c c c c c c c c. C cc. C c c c c c

Ans 10:

Subhang Deep Sahu from Chrysalis High Kadugodi . , Bangalore
Class : Class 7

Ans 11:

Rupkatha Bhattacharyya from Ashok hall girls high school, KOLKATA
Class : Class 7

Ans 12:

Kenisha Tamboli from Mansukhbhai Kothari National School, Pune
Class : Class 6

Ans 13:

Goutham Ram from Lecole' Chempaka International, Trivandrum
Class : Class 5
D is right, take tobacco as an example.

Ans 14:

Pratham Dave from GNS, Bangalore
Class : Class 7
C is the answer to this question

Ans 15:

Biju Pappachan from Rkc , Raipur
Class : Class 1
C is Correct

Ans 16:

Arnav kaul from Chirec, Hyderabad
Class : Class 2

Ans 17:

Ridhan from SFS janakpuri, New Delhi
Class : Class 5
no as per me some resources are harmful like uranium as option d

Ans 18:

Divyanshi from United international School, Bangalore
Class : Class 6
Therefore lot of correct options.

Ans 19:

Shruthi from VIBGYOR, Mumbai
Class : Class 6

Ans 20:

swastik Biswal from St Joseph Convent Higher Secendary school, Sambalpur
Class : Class 5
c correct one pls check it olympiad plz

Ans 21:

Arghya Kashyap from Modern Delhi Public School, Faridabad
Class : Class 8

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j pranav from Dehli Public School Nacharam, Hyderabad
Subject :NSO    Class : Class 7

Ans 1:

arijit paul from New Town School, Kolkata
Class : Class 9
I know this answer........................................its (C) Prove me if its wrong

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