Questions

Write true or false if statement is wrong write the true statement.

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35 questions · self-marked practice — reveal the answer and mark yourself.

Question 121 Mark
If a + b < 7, where a ≥ 0 and b ≥ 0, then a < 7 and b < 7.
Answer
It is a statement that is true, hence its truth value is ‘T’.
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Question 161 Mark
The number of arrangements of 7 girls in a row for a photograph is 7!
Answer
It is a statement that is true, hence its truth value is ‘T’.
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Question 171 Mark
Two coplanar lines are either parallel or intersecting.
Answer
It is a statement that is true, hence its truth value is ‘T’.
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Question 181 Mark
The number 2 is only even a prime number.
Answer
It is a statement that is true, hence its truth value is ‘T’.
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Question 191 Mark
$x^2 – y^2 = (x + y)(x – y)$ for all $x, y \in R.$
Answer
It is a mathematical identity that is true, hence its truth value is $‘T’.$
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Question 201 Mark
The number π is an irrational number.
Answer
It is a statement that is true, hence its truth value is ‘T’.
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Question 251 Mark
Every real number is a complex number.
Answer
It is a statement that is true, hence its truth value is ‘T.
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Question 261 Mark
$(x + y)^2 = x^2 + 2xy + y^2$ for all $x, y \in R.$
Answer
It is a mathematical identity that is true, hence its truth value is $‘T’$.
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Question 301 Mark
$x^2 – 6x + 8 = 0$ implies $x = -4$ or $x = -2$.
Answer
It is a statement that is false, hence its truth value is ‘F’.
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Question 341 Mark
The sum of interior angles of a triangle is 180°.
Answer
It is a statement that is true, hence its truth value is ‘T’.
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