The H.C.F. of $$\frac{{9}}{{10}},$$ $$\frac{{12}}{{25}},$$ $$\frac{{18 – McqOptions

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1.	The H.C.F. of $$\frac{{9}}{{10}},$$ $$\frac{{12}}{{25}},$$ $$\frac{{18}}{{35}}$$ and $$\frac{{21}}{{40}}$$ is:
A.	$\frac{{3}}{{5}}$$
B.	$\frac{{252}}{{5}}$$
C.	$\frac{{3}}{{1400}}$$
D.	$\frac{{63}}{{700}}$$
Answer» D. $\frac{{63}}{{700}}$$

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