Basic MathematicsArithmetic (KVPY (Kishore Vaigyanik Protsahan Yojana) StreamSA (Class 11) Math): Questions 63  68 of 83
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Question number: 63
» 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: 64
» 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: 65
» 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. 


Question number: 66
» Basic Mathematics » Arithmetic » Number Games
Question
The square of is –
Choices
Choice (4)  Response  

a.  56.25 

b.  7.5 

c.  8.5 

d.  72.25 

Question number: 67
» Basic Mathematics » Arithmetic » Number Games
Question
Value of is –
Choices
Choice (4)  Response  

a.  16 

b.  4 

c.  9 

d.  25 

Question number: 68
» Basic Mathematics » Arithmetic » Rates, Speeds and Unitary Method
Question
A particle moves along the curve. Find the point on the curve at which the ycoordinate is changing 5 times as fast as the xcoordinate.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

