Question

which of the following is not a statement in logic.
1. 2 + 3 = 6
$2. \sqrt{ - 9} is \: a \: rational \: number$
3. X is natural number.
4. 0 is a complex number.
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Answer 1

Answer :

• 2+3 = 5

The first statement is false

• √-9 = 3i

This may or may not be rational many times true .

• x is natural number

The number can be whole but many times true

• 0 is a complex number .

True .

So (i) is incorrect and the answer of this question .

Answer 2

1)2+3=6

it always equal to 5 so,

there is no logic in this

2)√-9 is a rational number

√-9 can't be a rational no. ,we can say it as imaginary or complex number

3)X is a natural number

No logic in it,as x can also be 0,-1,-2...etc which is not a natural number

4)0 is a natural number

this statement is correct