KVPY StreamSA (Class 11) Math: Questions 94  98 of 265
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Question number: 94
» Basic Mathematics » Arithmetic » Rates
Question
I carried 100 kg of metal bucket of water in summer by train. In the beginning, the water content was 80%. By the time I reached the destination, the water content had dropped to 75%. The reduction in the weight of the bucket with water was
Choices
Choice (4)  Response  

a.  15 kg 

b.  20 kg 

c.  25 kg 

d.  30 kg 

Question number: 95
» Sets, Relations and Functions » Functions and Composition
Appeared in Year: 2014
Question
Let R be the set of all real numbers and let f be a function from R to R such that
for all x ∈ R. Then is equal to
Choices
Choice (4)  Response  

a.  2 

b.  4 

c.  2 

d.  0 

Question number: 96
» Basic Mathematics » Arithmetic » Rates
Appeared in Year: 2012
Question
A train leaves Pune at 7: 30 am and reaches Mumbai at 11: 30 am. Another train leaves Mumbai at 9: 30 am and reaches Pune at 1: 00 pm. Assuming that the two trains travel at constant speeds, at what time do the two trains cross each other?
Choices
Choice (4)  Response  

a.  11: 30 am 

b.  10: 26 am 

c.  data not sufficient 

d.  10: 20 am 

Question number: 97
» Complex Numbers and Quadratic Equations » Quadratic Equations in Real and Complex Number System
Appeared in Year: 2012
Question
The squareroot of is
Choices
Choice (4)  Response  

a.  3 

b.  4 

c.  2 

d.  1 

Question number: 98
» Basic Mathematics » Arithmetic » Ratio and Proportion
Appeared in Year: 2014
Question
In a cinema hall, the charge per person is Rs. 200. On the first day, only 60 % of the seats were filled. The owner decided to reduce the price by 20 % and there was an increase of 50 % in the number of spectators on the next day. The percentage increase in the revenue on the second day was
Choices
Choice (4)  Response  

a.  20 

b.  50 

c.  30 

d.  40 
