International Maths Olympiad Forum By SOF Olympiad Trainer - Page 458

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Subject :IMO    Class : Class 5

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Subject :IMO    Class : Class 8

Ans 1:

Class : Class 3
First option is wrong because a parallelogram is not always necessary to be a square or a rectangle ,as they only have diagonals equal. Second option is wrong because rectangle does not follow this property which can be checked by using SAS congruence criteria. Third option is wrong because if the diagonals of a quadrilateral intersect at right angles then it is necessarily a rhombus, if u are thinking that square also have this property then add up a point that every square is a rhombus. Fourth option is wrong because every quadrilateral is not necessarily be a trapezium, a parallelogram or a kite as concave quadrilaterals are none of them.

Ans 2:

Class : Class 3
Raunak Pandey yr answer is wrong , diagonals of a rectangle are not perpendicular

Ans 3:

Class : Class 8
@abin jose i agree

Ans 4:

Class : Class 8

Ans 5:

Class : Class 3
I feel all options are wrong

Ans 6:

Class : Class 8
third option is correct since in a kite, diagonals intersect at right angles and kite is not a rhombus. it does not talk about bisecting.

Ans 7:

Class : Class 8
c

Ans 8:

Class : Class 9
2nd option

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 5
If I follow the arrows I get 5

Ans 2:

Class : Class 10
Please mind the arrows. Find ways only that follows the arrows. So Ans will be 5

Ans 3:

Class : Class 1
There are 6

Ans 4:

Class : Class 8
THERE COULD BE MORE THAN 10

Ans 5:

Class : Class 4
I know the answer is C but explain the solution

Ans 6:

Class : Class 1
There are 6

Ans 7:

Class : Class 4

Ans 8:

Class : Class 3
6

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Subject :IMO    Class : Class 6
ggg

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 5
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Ans 2:

Class : Class 5
The master answer didn't solve my problem. Plss can somebody tell me the explanation and the answer?

Ans 3: (Master Answer)

Class : Class 1
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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 7
What that is not the answer , answer is D

Ans 2:

Class : Class 8
The answer is C

Ans 3:

Class : Class 8

Ans 4:

Class : Class 8
answer is c

Ans 5:

Class : Class 9
the answer is B

Ans 6:

Class : Class 7
What that is not the answer , answer is D

Ans 7:

Class : Class 7
c is the answer because 1 mother 3 unmarried daughters 2 sons have 4 daughters in total and two sons have two daughters in total and we also have to count the wives of the four sons. so altogether the female members are 14

Ans 8:

Class : Class 7
Answer is C!!!

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 9

Ans 2:

Class : Class 6
all options are wrong

Ans 3:

Class : Class 7
in the question your division sign is looking like sign and I also zoomed it 20 times

Ans 4:

Class : Class 6

Ans 5: (Master Answer)

Class : Class 1

The correct answer is C

(1.25 X 4) + (4.25 ÷ 5) = a X 1/4                                 

=> 5 + 0.85 = a X 1/4

=> 4 x 5.85 = a

=> 23.4 = a

 


Ans 6:

Class : Class 5
Aren't all options wrong I'm still confused...

Ans 7:

Class : Class 5

Ans 8:

Class : Class 9

Ans 9:

Class : Class 5
please correct your fake sign

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Subject :IMO    Class : Class 9

Ans 1:

Class : Class 10
Ya it's A they've given wrong

Ans 2:

Class : Class 9
The correct option is c

Ans 3:

Class : Class 9
A

Ans 4:

Class : Class 9
The statement is true but there are only 6 postulate which does not include this There are infinite points on a line

Ans 5:

Class : Class 9
correct is b

Ans 6:

Class : Class 10
c

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 7

Ans 2:

Class : Class 5
A

Ans 3:

Class : Class 5
11

Ans 4:

Class : Class 8
How did your answer came 11

Ans 5:

Class : Class 9
how option A

Ans 6:

Class : Class 7

Ans 7:

Class : Class 7
Answer is A. Please see solution. Here, we have to add the upper two numbers and then divide it by the bottom number, then we get answer 7 in every case.

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 8
sum of all numbers in a line is 15 6 4 5=15, 6 3 6=15, 6 8 1=15,7 5 3=15 so Answer is A

Ans 2:

Class : Class 5

Ans 3:

Class : Class 5
SUM OF ALL CHAIN IS 15 @ ANSWER A YAY MINE IS RIGHT.

Ans 4:

Class : Class 8
Sum of number in each chain is 15.

Ans 5:

Class : Class 6

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