Mathematical ContentNumber System and Arithmetic (CTET (Central Teacher Eligibility Test) PaperII Mathematics): Questions 1  7 of 177
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Question number: 1
» Mathematical Content » Number System and Arithmetic
Question
We call a number perfect if it is the sum of all its positive divisors, except itself. So, as per formula of perfect number n = , where p is a prime number, then which of the following is a perfect number if p = 5.
Choices
Choice (4)  Response  

a.  496 

b.  498 

c.  28 

d.  8128 

Question number: 2
» Mathematical Content » Number System and Arithmetic
Question
If 770707 = where x, y and z are whole numbers, then the value of is.
Choices
Choice (4)  Response  

a.  9 

b.  8 

c.  7 

d.  11 

Question number: 3
» Mathematical Content » Number System and Arithmetic
Question
The value of is.
Choices
Choice (4)  Response  

a.  24 

b.  25 

c.  38 

d.  22 

Question number: 4
» Mathematical Content » Number System and Arithmetic
Question
The product of two whole numbers is 81. The highest possible sum of these numbers is
Choices
Choice (4)  Response  

a.  83 

b.  30 

c.  18 

d.  82 

Question number: 5
» Mathematical Content » Number System and Arithmetic
Appeared in Year: 2014
Question
The product of two whole numbers is 24. The smallest possible sum of these numbers is (February)
Choices
Choice (4)  Response  

a.  9 

b.  10 

c.  8 

d.  12 

Question number: 6
» Mathematical Content » Number System and Arithmetic
Appeared in Year: 2014
Question
A fraction is equivalent to . Its denominator and numerator add up to 91. What is the difference between the denominator and numerator of this fraction? (February)
Choices
Choice (4)  Response  

a.  19 

b.  21 

c.  3 

d.  13 

Question number: 7
» Mathematical Content » Number System and Arithmetic
Appeared in Year: 2014
Question
We call a number perfect if it is the sum of all its positive divisors, except itself. For example, 28 is a perfect number because Which of the following number is a perfect number? (February)
Choices
Choice (4)  Response  

a.  6 

b.  10 

c.  13 

d.  9 
