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MCQs for chapter 1
Real Numbers.
For PST ETEA 2021
Class 10th
Subscribe My Another Channel “NTS Planet”
The decimal expansion of 22/7 is
(a) Terminating
(b) Non-terminating and repeating
(c) Non-terminating and Non-repeating
(d) None of the above
Explanation:
22/7= 3.14285714286..
For some integer n, the odd integer is
represented in the form of:
(a) n
(b) n+1
(c) 2n+1
(d) 2n
Explanation: Since 2n represents the even
numbers, hence 2n+1 will always represent
the odd numbers. Suppose if n=2, then 2n=4
and 2n+1 = 5.
HCF of 26 and 91 is:
(a)15
(b)13
(c)19
(d)11
The prime factorization of 26
and 91 is;
26 = 2 x 13
91 = 7 x 13
Hence, HCF (26, 91) = 13
Which of the following is not irrational?
(a) (3+√7)
(b) (3-√7)
(c) (3+√7) (3-√7)
(d) 3√7
If we solve, (3+√7) (3-√7), we get;
(3+√7) (3-√7) = 32-(√7)2 = 9 – 7 = 2
[By a2-b2 = (a-b) (a+b)]
The addition of a rational number and an
irrational number is equal to:
(a)rational number
(b)Irrational number
(c)Both
(d)None of the above
The multiplication of two irrational numbers is:
(a)irrational number
(b)rational number
(c)Maybe rational or irrational
(d)None
If set A = {1, 2, 3, 4, 5,…} is given, then it
represents:
(a)Whole numbers
(b)Rational Numbers
(c)Natural numbers
(d)Complex numbers
If p and q are integers and is represented in
the form of p/q, then it is a:
(a)Whole numbers
(b)Rational numbers
(c)Natural numbers
(d)Even numbers
Download Pdf Of From Link In
description

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Real Numbers Maths mcqs (aptitude questions) for etea nts 2021

  • 1. MCQs for chapter 1 Real Numbers. For PST ETEA 2021 Class 10th Subscribe My Another Channel “NTS Planet”
  • 2. The decimal expansion of 22/7 is (a) Terminating (b) Non-terminating and repeating (c) Non-terminating and Non-repeating (d) None of the above Explanation: 22/7= 3.14285714286..
  • 3. For some integer n, the odd integer is represented in the form of: (a) n (b) n+1 (c) 2n+1 (d) 2n Explanation: Since 2n represents the even numbers, hence 2n+1 will always represent the odd numbers. Suppose if n=2, then 2n=4 and 2n+1 = 5.
  • 4. HCF of 26 and 91 is: (a)15 (b)13 (c)19 (d)11 The prime factorization of 26 and 91 is; 26 = 2 x 13 91 = 7 x 13 Hence, HCF (26, 91) = 13
  • 5. Which of the following is not irrational? (a) (3+√7) (b) (3-√7) (c) (3+√7) (3-√7) (d) 3√7 If we solve, (3+√7) (3-√7), we get; (3+√7) (3-√7) = 32-(√7)2 = 9 – 7 = 2 [By a2-b2 = (a-b) (a+b)]
  • 6. The addition of a rational number and an irrational number is equal to: (a)rational number (b)Irrational number (c)Both (d)None of the above
  • 7. The multiplication of two irrational numbers is: (a)irrational number (b)rational number (c)Maybe rational or irrational (d)None
  • 8. If set A = {1, 2, 3, 4, 5,…} is given, then it represents: (a)Whole numbers (b)Rational Numbers (c)Natural numbers (d)Complex numbers
  • 9. If p and q are integers and is represented in the form of p/q, then it is a: (a)Whole numbers (b)Rational numbers (c)Natural numbers (d)Even numbers
  • 10. Download Pdf Of From Link In description