OP Malhotra Class 11 Maths Solutions Chapter 27 Mathematical Reasoning Ex 27(a)

Practicing ISC Mathematics Class 11 OP Malhotra Solutions Chapter 27 Mathematical Reasoning Ex 27(a) is the ultimate need for students who intend to score good marks in examinations.

S Chand Class 11 ICSE Maths Solutions Chapter 27 Mathematical Reasoning Ex 27(a)

Question 1.
Open the door.
Solution:
It is an imperative sentence so it does not represents a statement.

Question 2.
5 is a prime number.
Solution:
It is a statement.

Question 3.
Do you like mathematics ?
Solution:
It is not a statement as it is an Interrogative sentence.

Question 4.
Every rectangle is a square.
Solution:
It is a statement.

Question 5.
Today is Sunday and tomorrow is Monday.
Solution:
It is a compound statement as its component statement are;
(i) Today is Sunday
(ii) Tomorrow is Monday.

Question 6.
May you live long!
Solution:
It is not a statement. It is an exclamatory sentence.

Question 7.
Rekha is studying in class eleven and she has to offer 5 subjects.
Solution:
It is a compound statement and its components are ;
(i) Rekha is studying in class eleven.
(ii) She has to offer 5 subjects.

Question 8.
The earth revolves around the moon.
Solution: It is a simple statement.

Question 9.
New Delhi is a big city and it is the capital of India.
Solution:
It is a compound statement and its components are ;
(i) New Delhi is a big city.
(ii) It is the capital of India.

Question 10.
20 is a prime number and 20 is less than 21.
Solution:
It represents a compound statement and its components are ;
(i) 20 is a prime number
(ii) 20 is less than 21.
Write down whether the following statements are true (T) or false (F).

Question 11.
8 is a prime number.
Solution:
It is a false statement.

Question 12.
Every square is a rectangle.
Solution:
It is a true statement.

Question 13.
The earth revolves around the moon.
Solution:
It is a false statement.

Question 14.
The set of whole numbers is a finite set.
Solution:
It is a false statement as the set of whole numbers is an infinite set.

Question 15.
32 is a multiple of 8.
Solution:
It is a true statement.

Question 16.
3 + 4i is a complex number.
Solution:
It is a true statement.