Question

Q1 Which of these is true for any non-zero rational number p?
1 p × (- p) = 1
2 (-p) ÷ p = -1
3 p - (-p) = 0
4 - 1/p =p

Answer 1

Answer:

1 false

2 true

3 false

4 false

Answer 2

Given - Non rational number p with various arithmetic operations.

Find - True among given options.

Solution - Multiplication and division of opposite signs give result as negative.

Hence, result will be -p² and -1.

In subtraction, two negative signs add up. Thus, answer will be 2p.

On writing the reciprocal sign is not changed. So, the answer will be p.

Hence, only option 2 is true among given options.