Basic Mathematics (KVPY StreamSA (Class 11) Math): Questions 125  130 of 156
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Question number: 125
» Basic Mathematics » Arithmetic » Number Games
Question
Consider an incomplete pyramid of balls on a square base having 15 layers; and having 10 balls on each side of the top layer. Then the total number N of balls in that pyramid satisfies
Choices
Choice (4)  Response  

a.  60000 < N < 7000  
b.  4000 < N < 5000  
c.  5000 < N < 6000  
d.  3000 < N < 40000 
Question number: 126
» Basic Mathematics » Geometry » Triangle and Properties
Question
The number of values of a for which there is an isosceles triangle with sides of length , and is –
Choices
Choice (4)  Response  

a.  1  
b.  0  
c.  2  
d.  3 
Question number: 127
» 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: 128
» 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: 129
» 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. 

Question number: 130
» Basic Mathematics » Arithmetic » Ratio and Proportion
Question
A bag contains 50 p, 25 p and 10 p coins in the ratio , amounting to Rs. 95. Find the numbers of coins of each type,
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
