Question

i) (A) Both A and R are true and R is the correct explanation of A.

(ii) (B) Both A and R are true but R is not the correct explanation of A.

(iii) (C) A is true but R is false.

(iv) (D) A is false but R is true.1. Assertion (A): -5/9 is the additive inverse of 5/9.

Reason (R): The negative of any number is called additive inverse of the number.

2. Assertion (A): If a and b are rational numbers and a + b = b + a.

Reason (R): In Associative Property order of addition of the numbers doesn’t affect the result.

3. Assertion (A): Repeated subtraction method is used to find out the cube root of any perfect cube.

Reason (R): Cube Root of any number can be deduced with the help of Long division method.

4. Assertion (A): Pythagoras Theorem is used only in dimensions of Right Triangles.

Reason (R): Pythagorean Triplets are 3, 4 and 5.

5. Assertion (A): A linear equation in one variable has infinite number of solutions.

Reason (R): A straight line consists of infinite number of points.

6. Assertion (A): Angle Sum of any polygon can be determined by (n – 2) x180o

(n is number of sides).

Reason (R): The sum of three interior angles of a triangle is 1800

.

7. Assertion (A): Five measurements can determine a quadrilateral uniquely.

Reason (R): A square can be constructed when one of its sides is given.

8. Assertion (A): Each outcome of an experiment or a collection of outcomes make an event.

Reason (R): In case of throwing a die, getting each of the outcomes 1, 2, 3, 4, 5 or 6 is an event.

9. Assertion (A): The sum of first n odd natural numbers is n2

.

Reason (R): If a natural number cannot be expressed as a sum of odd natural numbers starting with 1,

then it is not a perfect square.

10. Assertion (A): Simple Interest is the interest calculated on Principal every year.

Reason (R): Compound Interest is the interest calculated on the previous year’s amount.​

Answer 1

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