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Question Number 20810 by Tinkutara last updated on 03/Sep/17

$$\mathrm{What}\mathrm{is}\mathrm{the}\mathrm{number}\mathrm{of}\mathrm{triples}(a,b,c)\mathrm{of}$$ $$\mathrm{positive}\mathrm{integers}\mathrm{such}\mathrm{that}$$ $$\left(\mathrm{i}\right)a<b<c<10\mathrm{and}\left(\mathrm{ii}\right)a,b,c,10\mathrm{form}$$ $$\mathrm{the}\mathrm{sides}\mathrm{of}\mathrm{a}\mathrm{quadrilateral}?$$

Commented byTinkutara last updated on 04/Sep/17

$$\mathrm{help}\mathrm{pls}$$

Commented byTinkutara last updated on 05/Sep/17

$$\mathrm{help}\mathrm{pls}$$

Commented byTinkutara last updated on 05/Sep/17

$$\mathrm{help}\mathrm{pls}$$

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