Arts (English Medium) इयत्ता ११ - CBSE Question Bank Solutions

Which of the following sentences are statements? Give reasons for your answer.

The product of (–1) and 8 is 8.

Which of the following sentences are statements? Give reasons for your answer.

The sum of all interior angles of a triangle is 180°.

Which of the following sentences are statements? Give reasons for your answer.

Today is a windy day.

Which of the following sentences are statements? Give reasons for your answer.

All real numbers are complex numbers.

Which of the following collection are sets? Justify your answer:

 The collection of all girls in your class.

Which of the following collection is set? Justify your answer: 

The collection of ten most talented writers of India.

Which of the following collection are sets? Justify your answer: 

 The collection of difficult topics in mathematics.

Which of the following collection are sets? Justify your answer: 

 A collection of novels written by Munshi Prem Chand.

Which of the following collection are sets? Justify your answer: 

The collection of all question in this chapter.

Which of the following collection are sets? Justify your answer:  

The collection of prime integers.

If A = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10], then insert the appropriate symbol ∈ or ∉ in each of the following blank space: 

4 ...... A  

If A = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10], then insert the appropriate symbol ∈ or ∉ in each of the following blank space: 

−4 ...... A 

If A = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10], then insert the appropriate symbol ∈ or ∉ in each of the following blank space: 

 9 ...... A

If A = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10], then insert the appropriate symbol ∈ or ∉ in each of the following blank space:  

 0 ...... A

If A = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10], then insert the appropriate symbol ∈ or ∉ in each of the following blank space: 

−2 ...... A

Describe the following sets in Roster form: 

{x : x is a letter before e in the English alphabet}

Describe the following sets in Roster form: 

{x ∈ N : x² < 25}; 

Describe the following sets in Roster form: 

{x ∈ N : x is a prime number, 10 < x < 20};

Describe the following sets in Roster form: 

 {x ∈ N : x = 2n, n ∈ N};