Reeta and Geeta are twin sisters. They both study in class IX.They love to study Maths as it is their favourite subject.These days they are not going to school and having online classes only due to Corona pandemic. They are somewhat bored as they miss their school friends. One day they decide to play online quiz. The quiz is about rational and irrational numbers. One by one they are given a number on screen. They have to identify that number as rational or irrational and put that number in the correct bin as shown in picture. They get +10 points for correct answer and -5 points for incorrect answer.
Following is the detail of their responses after finishing the game. Reeta’s responses Geeta’s responses
Answers
Answer:
i) Who won the game ?
=Reeta won the game as she did two incorrect answers and Geeta did three incorrect answers
ii) Geeta says that 22/7 is an irrational number as it is value of π(pi) but Reeta disagree with her and says that 22/7 is a rational number. What do you think ,who is correct ? Explain your answer.
= Reeta is correct as 22/7 is a rational number and can be expressed in the form of p/q where q is not equal to 0 and , π is an irrational number and 22/7 is an approximate value of π ,not exact value ( in actuall π can't be expressed in the form of p/q).
iii) Identify whether 25.252525... is a rational or irrational number. Justify your answer.
= 25.252525... is a rational number as it is non- terminating and recurring number.
Answer:
Reeta and Geeta are twin sisters. They both study in class IX. They love to study Maths as it is
their favourite subject. These days they are not going to school and having online classes only due to
Covid-19 pandemic. They are somewhat bored as they miss their school friends. One day they decide
to play online quiz. The quiz is about rational and irrational numbers. One by one they are given a
number on screen. They have to identify that number as rational or irrational and put that number in
the correct bin as shown in picture. They get +10 points for correct answer and -5 points for incorrect
answer.
Following is the detail of their responses after finishing the game.
Q.1 : Who won the game?
Q.2 : Geeta says that 22/7 is an irrational number as it is value of π(pi) but Reeta disagrees with
her and says that 22/7 is a rational number. What do you think Who is correct? Explain your answer.
Q.3 : Identify Whether 25.252525… is a rational or irrational number. Justify your answer.
Exemplar Questions