Question

please tell me the answer of maths 1.​

Answer 1

Answer:

Q3. B

(iv) Answer→refer attachment!

Step-by-step explanation:

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Answer 2

Answer:

3.iii)

Assume that,

42 is a rational number. 

Then, there exists coprime positive integers p & q such that 

42=qp

2=4qp (∵ p & q are integers)

⇒4qp is rational

⇒2 is rational

This contradict the fact that 2

is irrational. so our assumption is incorrect.

Hence 42 is irritational.