Sets - EDUBOOST-I

Which of the following collections are sets ?

• The collection of all the days of a week

• A collection of 11 best hockey player of India.

•  The collection of all rich person of Delhi

•     A collection of most dangerous animals of India.

• {x}

• {}

• {1}

• {0}

Which of the following is a null set ?

Which of the following is a singleton set?

Which of the following is not a null set?

• Set of odd natural numbers divisible by 2

• Set of even prime numbers

• {y : y is a point common to two parallel lines}

• None of the above

If B = {x : x is a student presently studying in both classes  and XI }. Then, the number of elements in set B are

• Finite

• Infinite

• Zero

• None of the above

Consider the following statements

I. The vowels in the English alphabet.

II. The collection of books.

III. The rivers of India.

IV. The collection of most talented batsmen of India.

Which of the following is/are well-defined collections?

• I and II

• Only I

• I and III

• I and IV

The set of all letters of the word 'SCHOOL' is represented by

I. {S,C,H,O,O,L}

II. {S,C,H,O,L}

III. {C,H,O,L,S}

IV. {S,C,H,L}

The correct code is

• I and II

• I, II and III

• II and III

• I, II, III and IV

I. The collection of all months of a year beginning with the letter J.

II. The collection of ten most talented writers of India.

III. A team of eleven best cricket batsmen of the world.

IV. The collection of all boys in your class.

Which of the above are the sets?

• (a) I and II

• (b) I and III

• (c) I and IV

• (d) I, II and III