KVPY StreamSA (Class 11) Math: Questions 192  197 of 251
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Question number: 192
» Permutations and Combinations » Simple Applications
Question
If ^{n }C _{r1} = 8, ^{n }C _{r} = 28, and ^{n }C _{r + 1} = 56; than value of n and r respectively –
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 193
» Basic Mathematics » Arithmetic » Rates, Speeds and Unitary Method
Question
12 women can complete a work in 5 days and 12 children take 10 days to complete a work. How many days will 3 women and 6 children take to complete the work?
Choices
Choice (4)  Response  

a.  12  
b.  8  
c.  9  
d.  10 
Question number: 194
» Complex Numbers and Quadratic Equations » Relation Between Roots and Coefficients
Question
If the roots of the equation are equal then,
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 195
» Basic Mathematics » Arithmetic » Simplifying Expressions
Question
If α is the root of then other root β is –
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  All a. , b. and c. are correct 
Question number: 196
» Trigonometry » Trigonometric Functions
Question
If and , then
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 197
» Complex Numbers and Quadratic Equations » Relation Between Roots and Coefficients
Question
If where α, β are the roots of the equation then the value of c is –
Choices
Choice (4)  Response  

a.  3  
b.  2  
c.  0  
d.  4 