Question

Q-4 If x2= 0.9, then xis:
O (a) A rational number
O (6) A whole number
0 (c) An irrational number
O (d) None of these​

Answer 1

Answer:

${x}^{2} = 0.9$

$x = \sqrt{0.9}$

$it \: is \: an \: irrational \: number.$

$\sqrt{0.9} \: is \: not \: a \: perfect \: square \: as \: \: \\ there \: is \: only \: one \: number \: after \\ \: decimal$

$there \: shoud \: be \: an \: even \: number \\ \:of \: digits \\ \: after \: decimal$

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