Question

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Answer 1

1. 3 + 2 = 5

• 5 is a rational number. sum of a two rational numbers is always a rational number.

2. √19 + 7/2

Here, √19 is a irrational number but 7/2 is a rational number and as we know that sum of a rational and irrational number is always irrational number .

Hence √19 + 7/2 is a irrational number.

3. 18/3 + 11/10,00

Here
`\sf (18)/(13) \: and \: (7)/(2)` both are the rational numbers and sum of a rational and rational number is always rational number.

4. -6 + (-3.521)

• -7 - 3.521
• -9.251

It is also a rational number.