self Maths Puzzle

Find the last non-zero digit of 36!?

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Rule: 4*D(36/5)*D(6)=4*D(7)*D(6)=4*5040*720=14515200.
last non-zero digit =2
10 years agoHelpfull: Yes(1) No(0)

self Other Question

Find a 2 digit number whose square is of the form "aabb". The number of permutations of letters a,b,c,d,e,f,g such that neither the pattern 'beg' nor 'acd' occurs is