Question 1
Question
1. For some integer m, every odd integer is of the form
Question 2
Question
The product of a non-zero number and an irrational number is:
Answer
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always irrational
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always rational
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rational or irrational
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one
Question 3
Question
If two positive integers p and q can be expressed as p = ab2 and q = a3b; a, b being prime numbers, then LCM (p, q) is
Question 4
Question
Euclid’s division lemma states “Given positive integers a and b, there exist unique integers q and r satisfying a=bq+r”. Which of the following is true for r?
Question 5
Question
If p and q are integers and is represented in the form of p/q, then it is a:
Answer
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Whole numbers
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Rational numbers
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Natural numbers
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Even numbers
Question 6
Question
The least number that is divisible by all the numbers from 1 to 10 (both inclusive) is
Question 7
Question
On a morning walk, three persons step off together and their steps measure 40 cm, 42 cm and 45 cm, respectively. What is the minimum distance each should walk so that each can cover the same distance in complete steps?
Answer
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2520cm
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2525cm
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2555cm
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2528cm
Question 8
Question
The degree of the polynomial (x + 1)(x2 – x – x4 +1) is:
Question 9
Question
The pair of equations x + 2y – 5 = 0 and −3x – 6y + 15 = 0 have:
Question 10
Question
If a pair of linear equations is consistent, then the lines will be..............