Page 17 - Mathematics Class - IX

Assertion-Reason Based Questions
Assertion-Reason Based Questions
Directions for Questions 1 to 2: In each of the questions given below, there are two statements marked as
Assertion (A) and Reason (R). Mark your answer as per the codes provided below:
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false. (d) A is false but R is true.

Q. 1. Assertion (A) : Rational numbers are not closed under addition.
p
Reason (R) : A rational number is a number that is in the form , where p and q both are
q
integers and q # 0.
1
Q. 2. Assertion (A) : of 2 is a rational number.
2
Reason (R) : A decimal in which a digit or a set of digits is repeated periodically is called a
repeating decimal.

Crossword Puzzles
Crossword Puzzles
Complete the following crossword puzzles.

1.

2.
3.

Down

1. number 1 is the ___________ positive integer.

2. smallest whole number is ___________.
3. π is a/an ___________ number.

Across

4. 3. number -1 is the greatest negative ___________ .

4. every rational number is a ___________ number.

Answers

Case-Study Based Questions: 1. (c) 2. (a) 3. (b)
Assertion-Reason Based Questions: 1. (d) 2. (b)

Crossword: Down: 1. smallest 2. zero 3. irrational
Across: 3. integer 4. real

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