In 1990, California switched from a 6/49 lottery to a 6/53 lottery. Later, the state switched again to a 6/51 lottery.
(a) Find the probability of winning first prize in a 6/49 lottery.

(b) Find the probability of winning first prize in a 6/53 lottery.

(c) Find the probability of winning first prize in a 6/51 lottery.

(d) How much more probable is it that one will win the 6/49 lottery than the 6/53 lottery? (Round your answer to the nearest whole number.)

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