KVPY StreamSA Math: Questions 208  212 of 251
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Question number: 208
» Basic Mathematics » Algebra » Solutions to Equations
Question
If a, b, c, d are positive real numbers such that, , then is –
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 209
» Three Dimensional Geometry » Distance Between Two Points
Question
If are three points and satisfy the relations , then the locus of the point S is –
Choices
Choice (4)  Response  

a.  Line parallel to y axis  
b.  Circle with centre origin  
c.  Circle passing through origin  
d.  Line parallel to xaxis 
Question number: 210
» Basic Mathematics » Arithmetic » Rates, Speeds and Unitary Method
Question
A ladder 12 cm long is leading against a wall. The bottom of the ladder is pulled along the ground, away from the wall, at the rate of 3 cm/sec. How fast is its height on the wall decreasing when the foot of the ladder is 5 cm away from the wall?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 211
» Trigonometry » Trigonometric Functions
Question
If than
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 212
» Basic Mathematics » Geometry » Polygons With More Than 4 Sides
Question
25 sphere of same size are made from melting a solid cylinder of 20 cm diameter and 9 cm height. The diameter of each sphere is:
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
