Additive Identity & Additive Inverse

Q. When 500 rupees note was changed rohan got 20 rupees note there are 30 notes in all .find the number of 10 rupees notes and 20 rupees notes ?

Q.

Question 107

State whether the statement is True or False.

The sum of an integer and its additive inverse is zero (0).

Q. Which of the following is the most simplified form of $(\sqrt{4}+\sqrt{12}+\sqrt{3})$ ?

1. $(2+2\sqrt{3}+\sqrt{3})$
2. $2+\sqrt{12}+\sqrt{3}$
3. $2+3\sqrt{3}$

Q.

What is (5x-7) when x = -1?

1. -2

2. 12

3. -12

4. 2

Q. Which of the following is the most simplified form of $(\sqrt{4}+\sqrt{12}+\sqrt{3})$ ?

1. $(2+2\sqrt{3}+\sqrt{3})$
2. $2+\sqrt{12}+\sqrt{3}$
3. $2+3\sqrt{3}$