International Maths Olympiad Forum By SOF Olympiad Trainer - Page 217

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Subject :IMO    Class : Class 5

Ans 1: (Master Answer)

Class : Class 1

(C): Total number of baskets = 15
Number of oranges in each basket = 85
Total number of oranges he packed
= 15 × 85 = 1275


Ans 2:

Class : Class 5
yes admin my ans is c

Ans 3:

Class : Class 7
cccccccccccccccccccccccccc

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 5
yes 7 is at hundred thousands placemy ans is correct

Ans 2: (Master Answer)

Class : Class 1

(A): 7 is at hundred thousands place.


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Subject :IMO    Class : Class 5

Ans 1: (Master Answer)

Class : Class 1

(B): (A) CCXVIII = 200 + 10 + 8 = 218
(B) DCCLXIX = 500 + 200 + 50 + 10 + 9 = 769
(C) MMMCCXCIX = 3000 + 200 + 90 + 9 = 3299
(D) DCCXLVII = 500 + 200 + 40 + 7 = 747


Ans 2:

Class : Class 7
DCCLXIX MEANS/=769

Ans 3:

Class : Class 6
B

Ans 4:

Class : Class 5

Ans 5:

Class : Class 4

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Subject :IMO    Class : Class 8

Ans 1:

Class : Class 3

Ans 2:

Class : Class 3

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 6
c

Ans 2:

Class : Class 6
I couldn't even see the full question

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Subject :IMO    Class : Class 8

Ans 1:

Class : Class 3
Ams is d

Ans 2:

Class : Class 8
the answer is d)

Ans 3:

Class : Class 9
Yeah. They only in one of their questions explained this concept and now themselves are telling the wrong answer. Ans is option D.

Ans 4:

Class : Class 8
Answer is d

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 9
x = 2k/3 and Y = 8k/5Therefore, x : y= x/y = (2k/3)/(8k/5)= (2k/3) *(5/8k)On cancelling, 2k with 8k, we get= (1/3) * (5/4) = 5/12Thus, x:y = 5:12Answer - (C)

Ans 2:

Class : Class 7

Ans 3:

Class : Class 6

Ans 4:

Class : Class 9

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 6
Yup !

Ans 2:

Class : Class 8
Everybody knows this

Ans 3:

Class : Class 6
Subtract the number of females from whole population. :)

Ans 4:

Class : Class 6
Solved in 15 seconds. It was so easy! ;)

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Subject :IMO    Class : Class 6

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 1
Ans 1 I think u have copied this from the solution. This is the same thing in the solution. No offence.

Ans 2:

Class : Class 7
6th multiple of 7 = 4210th multiple of 7 = 7042 - 70 = 2828* 2 = 56So, the correct answer is B.

Ans 3:

Class : Class 1
And I did not understand the solution. So, can u explain it better?

Ans 4: (Master Answer)

Class : Class 1

(B): 6th multiple of 7 = 42
10th multiple of 7 = 70
Now,  = 2 × (70 - 42) = 2 × 28 = 56


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