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Ans 1:
Class : Class 6
There are four equations P Q R=75; Q R S=90; P R S=100; Q S P=80Add them up all. You will get 3P 3Q 3R 3S=345. This means P Q R S=115We can replace the value of P Q R=75 in the above to get the value of S which would be 40. From the second equation, we can get the total value of Q R 40=90 as 50
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Ans 6:
Ans 7:
Ans 10:
Class : Class 3
If they tell increase by addition or multiplication , we'll know whether answer is C or A otherwise both answers are right
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Ans 3:
Class : Class 9
B is the correct answer since, the second portion in option A doesn't satisfy the order
Ans 9:
Class : Class 10
Option b will be correct. This question is there in IMO Workbook and there the answer is b only
Ans 27:
Class : Class 8
The answer b is correct as the order of congruence is different in every potion but b is correct
Ans 29:
Class : Class 7
B is the correct answer. A cannot be the correct answer as