International Maths Olympiad Forum By SOF Olympiad Trainer - Page 372

# User Forum

Subject :IMO    Class : Class 8

## Ans 1:

Class : Class 9
how can it be both?10/3 and -10/3 are like north and south polesthey are completely differentit can only be eitherboth is wrong

## Ans 2:

Class : Class 8
This is because -10/3 whole square is 100/9 and 10/3 whole square is also 100/9

## Ans 3:

Class : Class 9
You all may have done squaring on both sides. Now what you got it a² b²-2(because ab of third term cancel out)=64/9(8/3 square)(we are supposing a as root 3 x and b as1/ root 3 x)As the identity for (a b)² is a² b² 2(remeber ab of 2ab cancels out in all steps in this question),we need to add 4 on both side, and then square root the whole equationWe get a² b² 2=100/9. And on rooting, as both 10/9 and -10/9(if you are having problem understanding this then you must read some 9th class chapter's basic.)So option c is the answer

Class : Class 9
A- 10/3

Class : Class 6

Class : Class 8

Class : Class 5

## Ans 8:

Class : Class 10
can someone pls tell how to exactly solve the question, i got the answer till 8/3 in rhs. after that i dont understand how to do

Subject :IMO    Class : Class 2

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Subject :IMO    Class : Class 6

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Subject :IMO    Class : Class 6

## Ans 1:

Class : Class 9
a is the answer

Subject :IMO    Class : Class 4

Class : Class 4

## Ans 2:

Class : Class 3
45851

Subject :IMO    Class : Class 6

Class : Class 6
nice question

## Ans 2:

Class : Class 6

Subject :IMO    Class : Class 1

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Subject :IMO    Class : Class 6

## Ans 1: (Master Answer)

Class : Class 1

The place value and face value of a digit in a number is always equal at one's place.

Checkout this video to understad the concept better.

Place Value And Face Value, Expanded Form And Short Form

## Ans 2:

Class : Class 9
ans (b) is correct

## Ans 3:

Class : Class 7
OPTION NO. B IS CORRECT ANSWER ;)

Subject :IMO    Class : Class 1