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Nope ur answer to the last part of the permutation is wrong it's 57 not 43 but everything else is correct
the answers to the permutations questions were....for the first one 720 for the second one 60 for the last one 43. last question, last part u had to use the continuity rule or the binomial theorem, giving u an answer of 0.355 if my memory serves me correctly....... i got the variance wrong only due to me rounding up my mean. so would lose a mark! in general it was easy...and for the distribution for the coin the E(X) is 19/12. 100% sure about all the answers i have written