**(a)** Given Munnu’s age to be x years, can you guess what (x – 2) may show? Can you guess what (x + 4) may show? What (3 x + 7) may show?

**(b)** Given Sara’s age today to be y years. Think of her age in the future or in the past.

What will the following expression indicate?

**(c)** Given n students in the class like football, what may 2n show? What may show? (Hint : Think of games other than football).

**(a)**

Age of Munnu = x years

(x+4) may show Munnu's age after 4 years.

(3x+7) may show age of his father.

**(b) **

y + 7 would indicate age of Sara after 7 years.

y-3 would indicate age of Sara 3 years back.

would indicate age of Sara after years.

would indicate age of Sara years back.

**(c)**

2n may show number of students who like cricket.

may show number of students who like tennis.