Chapter 14: Problem 2
Give three examples of sentences which are not statements. Give reasons for the answers.
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Chapter 14: Problem 2
Give three examples of sentences which are not statements. Give reasons for the answers.
These are the key concepts you need to understand to accurately answer the question.
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Given statements in (a) and (b). Identify the statements given below as contrapositive or converse of each other. (a) If you live in Delhi, then you have winter clothes. (i) If you do not have winter clothes, then you do not live in Delhi. (ii) If you have winter clothes, then you live in Delhi. (b) If a quadrilateral is a parallelogram, then its diagonals bisect each other. (i) If the diagonals of a quadrilateral do not bisect each other, then the quadrilateral is not a parallelogram. (ii) If the diagonals of a quadrilateral bisect each other, then it is a parallelogram.
Show that the following statement is true by the method of contrapositive. \(p:\) If \(x\) is an integer and \(x^{2}\) is even, then \(x\) is also even.
Find the component statements of the following compound statements and check whether they are true or false. (i) Number 3 is prime or it is odd. (ii) All integers are positive or negative. (iii) 100 is divisible by 3,11 and 5 .
Rewrite the following statement with "if-then" in five different ways conveying the same meaning. If a natural number is odd, then its square is also odd.
By giving a counter example, show that the following statements are not true. (i) \(p:\) If all the angles of a triangle are equal, then the triangle is an obtuse angled triangle. (ii) \(q\) : The equation \(x^{2}-1=0\) does not have a root lying between 0 and 2 .
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