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Question Number 216786 by mnjuly1970 last updated on 20/Feb/25

Answered by mehdee7396 last updated on 21/Feb/25

suppose a,b,c∈A a+b=p (i) & a+c=q (ii) & b+c=m (iii) ; p,q,m∈Q (i)−(ii)→b−c=p−q (iv) (iv)+(iii)→2b=p−q+m∈Q ⇒b∈Q it is incorrect

supposea,b,c∈Aa+b=p(i)&a+c=q(ii)&b+c=m(iii);p,q,m∈Q(i)−(ii)→b−c=p−q(iv)(iv)+(iii)→2b=p−q+m∈Q⇒b∈Qitisincorrect

Commented by mnjuly1970 last updated on 21/Feb/25

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