If X = {a, b, c, d} and Y = {f, b, d, g}, find

(i) X – Y

(ii) Y – X

(iii) X ∩ Y

Are the following pair of sets equal? Give reasons.

(i) A = {2, 3}; B = {x: x is solution of x2 + 5x + 6 = 0}

(ii) A = {x: x is a letter in the word FOLLOW}; B = {y: y is a letter in the

word WOLF}

Read the passage given below and answer the questions that follow: 

Ae is old, but I wouldn’t take five Squeezers for him. Why, how can you? Guess is a dog: as for Squeezer, well, it’s too funny to argue. Anybody you like has a dog as good as Squeezer you may find them under every bush almost. Twenty-five roubles would be a handsome price to pay for him.

1. Who does ‘he’ refer to?

(i) He refers to ‘Guess’, the dog.

(ii) He refers to ‘Squeezer’, the dog.

(iii) He refers to ‘Guess’, the cow.

(iv) He refers to ‘Guess’, the cat.

2. Who is the speaker of these lines?

(i) The man is the speaker of these lines.

(ii) Lomov is the speaker of these lines.

(iii) Chubukov is the speaker of these lines.

(iv) Natalya is the speaker of these lines.

3. Whom does Squeezer belong to?

(i) Squeezer belongs to Lomov.

(ii) Squeezer belongs to grandmother.

(iii) Squeezer belongs to Chubukov.

(iv) Squeezer belongs to Natalya.

4. What would be a handsome price to pay for Squeezer?

(i) The handsome price to pay for Squeezer would be twenty-Bve roubles.

(ii) The handsome price to pay for Squeezer would be twenty roubles.

(iii) The handsome price to pay for Squeezer would be twenty-three roubles.

(iv) The handsome price to pay for Squeezer would be thirty roubles.

5. Why was Lomov wearing his evening dress?

(i) Lomov was wearing his evening dress to pay New Dear Eve’s visit.

(ii) Lomov was wearing his evening dress to ask for Chubukov’s daughter’s hand in marriage.

(iii) Lomov was wearing his evening dress to borrow money.

(iv) Lomov was wearing his evening dress to borrow land.