The compound ratio of ab :c^{2}, bc : a^{2} and ca : b^{2} is 1:1.

Answer : True

Explanation : The given ratios are

ab :c^{2}

bc : a^{2}

ca : b^{2}

Compound Ratio of the given ratios = ( ab × bc × ca ) : ( c^{2} × a^{2} × b^{2} )

= a^{2} b^{2} c^{2} : a^{2} b^{2} c^{2}

= 1 : 1

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