IMO Mathematics Olympiad (SOF) Class 8: Questions 319  323 of 1030
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Question number: 319
Question
30 % of 300 = x% of 150, then the value of x is________.
Choices
Choice (4)  Response  

a.  60 

b.  50 

c.  30 

d.  10 

Question number: 320
» Quadrilaterals and Practical Geometry
Question
Given below steps of construct a quadrilateral PQRS where PQ = 5.0 cm, QR = 3.0 cm, RS = 4.2 cm, SP = 3.3 cm and which of the following is a wrong step?
(P) Step 1: Draw PQ = 5.0 cm and construct
(Q) Step 2: With P as center and radius SP = 3.3 cm, cut off SP = 3.3 cm along PX.
(R) Step 3: Join. With S as center and radius RS = 4.2 cm, draw an arc.
(S) Step 4: With Q as center and radius QR = 3.0 cm, draw an arc to cut the arc drawn in above step at R. Join QR, RS to obtain the required quadrilateral PQRS.
Choices
Choice (4)  Response  

a.  p 

b.  R 

c.  Q 

d.  S 

Question number: 321
» Quadrilaterals and Practical Geometry
Question
In a parallelogram ABCD, if, then the others angles are________.
Choices
Choice (4)  Response  

a.  35, 145, 145 

b.  35, 135, 135 

c.  45, 115, 115 

d.  45, 125, 135 

Question number: 322
» Quadrilaterals and Practical Geometry
Question
The exterior angle of a regular polygon is onefourth of its interior angle. How many sides has the polygon?
Choices
Choice (4)  Response  

a.  8 

b.  10 

c.  4 

d.  12 

Question number: 323
» Quadrilaterals and Practical Geometry
Question
To construct a convex quadrilateral which of the following cases is not correct?
Choices
Choice (4)  Response  

a.  When the lengths of four sides and one diagonal are given 

b.  When the lengths of three sides and the two diagonal given. 

c.  When the lengths of two sides and one angle are given. 

d.  When the lengths of two sides and two included angles are given. 
