KVPY StreamSA (Class 11) Math: Questions 10  14 of 265
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Question number: 10
» Basic Mathematics » Arithmetic » Rates
Appeared in Year: 2011
Question
Three taps A, B, C fill up a tank independently in 10 hr, 20 hr, 30 hr respectively. Initially the tank is empty and exactly one pair of taps is open during each hour and every pair of taps is open at least for one hour. What is the minimum number of hours required to fill the tank?
Choices
Choice (4)  Response  

a.  9 

b.  11 

c.  8 

d.  10 

Question number: 11
» Statistics and Probability » Probability of an Event
Appeared in Year: 2011
Question
There are 30 questions in a multiple –choice test. A student gets 1 mark for each unattempt question, 0 mark for each wrong answer and 4 marks for each correct answer. A student answered x question correctly and scored 60. Then the number of possible value of x is
Choices
Choice (4)  Response  

a.  6 

b.  5 

c.  15 

d.  10 

Question number: 12
» Statistics and Probability » Measures of Dispersion
Appeared in Year: 2011
Question
Consider an incomplete pyramid of balls on a square base having 18 layers; and having 13 balls on each side of the top layer. Then the total number N of balls in that pyramid satisfies
Choices
Choice (4)  Response  

a.  7000 < N < 8000 

b.  8000 < N < 9000 

c.  10000 < N < 12000 

d.  9000 < N < 10000 

Question number: 13
» Statistics and Probability » Measures of Dispersion
Question
Consider an incomplete pyramid of balls on a square base having 15 layers; and having 8 balls on each side of the top layer. Then the total number N of balls in that pyramid satisfies
Choices
Choice (4)  Response  

a.  3800 < N < 4000 

b.  3000 < N < 4000 

c.  6000 < N < 8000 

d.  10000 < N < 12000 

Question number: 14
» Coordinate Geometry » Distance Formula
Appeared in Year: 2011
Question
A frog is presently located at the origin (0, 0) in the XYplane. It always jumps from a point with integer coordinates to a point with integer coordinates moving a distance of 5 units in each jump. What is the minimum number of jumps required for the frog to go from (0, 0) to (0, 1)?
Choices
Choice (4)  Response  

a.  4 

b.  9 

c.  2 

d.  3 
