$(6\mathrm{.}2)$ In an experiment to test the application of the theory

of percolation to gelation, the gel fraction is determined

when the fractional extent of reaction is a small degree

$f$ larger than its value at the gel point.

a$)$ Is the value of the gel fraction at a fractional extent

of reaction $\frac{f}{2}$ larger or smaller when predicted

by percolation theory than the value predicted by

Flory$-$Stockmayer theory?

b$)$ By what factor do the two predictions differ?