IMO Mathematics Olympiad Class 8: Questions 270  274 of 1029
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Question number: 270
» Quadrilaterals and Practical Geometry
Question
The number of sides of a regular polygon whose each exterior angle has a measure of is________.
Choices
Choice (4)  Response  

a.  10 

b.  8 

c.  3 

d.  6 

Question number: 271
Question
What sum lent out at C. I. will amount to Rs. 900 in 2 years at 20 % p. a. interest?
Choices
Choice (4)  Response  

a.  625 Rs. 

b.  700 Rs. 

c.  550 Rs. 

d.  600 Rs. 

Question number: 272
Question
Rice is bought at Rs. 30.50 per kg and sold at Rs. 32.00 per kg. The gain percent is________.
Choices
Choice (4)  Response  

a.  4.70% 

b.  3.12% 

c.  4.91% 

d.  3.00% 

Question number: 273
» Quadrilaterals and Practical Geometry
Question
Given below steps of construct a quadrilateral ABCD where AB = 5.2 cm, BC = 4.0 cm, CD = 4.2 cm, AD = 3.3 cm and which of the following is a wrong step?
(P) Step 1: Draw AB = 5.2cm and construct
(Q) Step 2: With A as center and radius AD = 3.3 cm, cut off AD = 3.3 cm along AX.
(R) Step 3: Join BD. With D as center and radius DC = 4.2 cm, draw an arc.
(S) Step 4: With B as center and radius BC = 4.0 cm, draw an arc to cut the arc drawn in above step at C. Join BC, CD to obtain the required quadrilateral ABCD.
Choices
Choice (4)  Response  

a.  R 

b.  S 

c.  P 

d.  Q 

Question number: 274
Question
A bag contains 50p, 25p, 10p coins in the ratio 1: 3: 2, amounting to Rs. 87. Find the total number of coins.
Choices
Choice (4)  Response  

a.  100 

b.  400 

c.  200 

d.  360 
