(1-2/7)*(1-2/9)*...(1-2/97)*(1-2/99 )

Please help ASAP

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer

If you are dealt 4 cards from a shuffled deck of 52? cards, find the probability that all 4 cards are diamondsdiamonds.

With both problems. a.s.a.p directions on photo ^