Question

Please solve urgent
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Answer 1

Answer:

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ans 3 1

ans 4. none of these

ans 5. 0

ans 6. -3

ans 7. -1/a

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Answer 2

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3.

Here 1 is the Multiplicative Identity element

0 is the Additive Identity Element

EXPLANATION :

• 1 is the Multiplicative Identity element as

For any real number a

a× 1 = 1 × a = a

• 0 is the Additive Identity element as

For any real number a

a + 0 = 0+ a = a

4.

1 is the Multiplicative Identity element for rational numbers

EXPLANATION :

• : 1 is the Multiplicative Identity element as

: 1 is the Multiplicative Identity element as For any real number a

: 1 is the Multiplicative Identity element as For any real number a a× 1 = 1 × a = a

5.

0 is neither a positive nor a negative rational number

6.

$- \frac{2}{3}$ lies between 0 and 1

7.

$\frac{1}{a}$is the reciprocal of a

EXPLANATION :

b is said to be the reciprocal of a if

b × a = 1

So

$\frac{1}{a}$is the reciprocal of a