Groups Examples and non examples

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(Q, ×) is not a group. Inverse of zero not satisfied. Similarly (R, ×) is also not a group.

sunimanaik
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(Q, X) Is it a group? if yes what is the inverse of 0?

abebawakwoya
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Mam set of all rational number under multiplication is not a group because rational number contains 0 and 0 has no inverse... If omit 0 from rational number then Q becomes a group under multiplication..

sushmithada
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(q, x) & (r, x) are not group because they dont have inverse for 0

aryapathak
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No, because associative property is not satisfied.

nimeshsingh
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0 is an element of rational numbers and it has no inverse. Thus, (Q, x) is not a group.

bntv