oops forgot about that
48+48=96-12=84
36 permutation
what operations are you asking for?
multipplication 40/35
division 14/25
addition 78/35
subtraction -22/35
number of permutations of whole;120
number of permutations with a and b together:24
number f permutations with c and d together: 24
number of where tey are both together(ab and cd): 12
24+24-12=36
120-36=84
1. a=7, b=3
2. Area=42
infinity
48
count it
6 i believe
d= davids age
mary=d+16
charlie=d+13
d+d+16+d+13=3d+29=62
3d=33
d=11
Mary=d+16
Mary=27 years old
or you can do the radius*pi
