Mathematics [NSTSE (National Science Talent Search Exam Unified Council) Class 9]: Questions 365  371 of 989
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Question 365
Question
MCQ▾The probability that in a family of 2 children, there will be at least one girl is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  1 
Question 366
Question
MCQ▾If and is the solution of the equation , then the value of ‘k’ is ________.
Choices
Choice (4)  Response  

a.  18  
b.  6  
c.  19  
d.  21 
Question 367
Question
MCQ▾Two sides of a triangle are 6 and 9 units. Which of the following length can be the length of the third side?
Choices
Choice (4)  Response  

a.  15 cm  
b.  17 cm  
c.  2 cm  
d.  11 cm 
Question 368
Question
MCQ▾The area of a parallelogram whose diagonal is 13.6 cm and the perpendicular distance of this diagonal from an opposite vertex is 15 cm is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question 369
Question
MCQ▾The cost of painting the TSA of cone at is Rs. 35.2. The volume of the cone its slant height being 50 cm is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question 370
Question
MCQ▾The product of two rational numbers is . If one of the number is , then the other number is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question 371
Question
MCQ▾If the angles of a triangle are in the ratio 3: 2: 1 then the triangle is
Choices
Choice (4)  Response  

a.  Right angled isosceles  
b.  Acute angled  
c.  Right angled  
d.  Obtuse angled 