Matematica curiosa - Martufi, Gabriele - Altervista

55+44=143; base 6; 5x6+5+4x6+4=63=1x36+4x6+3=143
11+22+33=132; base 4; 5+10+15=30=1x16+3x4+2=132
5x5=41; base 6; 25=4x6+1=41
52:4=12; base 6; 32:4=8=1x6+2=12
66+11=110; base 7; 6x7+6+8=56=1x49+1x7+0=110
33+33+33=132; base 7; 24x3=72=1x49+3x7+2=132
1+1+1+1=100; base 2; 1+1+1+1+1=101; 1+1+1+1+1+1=110…..
14x14=220; base 8; 12x12=144=2x64+2x8+0=220
2+2=11; base 3; 3+3=12; base 4; 4+4=13; base 5…….
111x111=20021; base 3; 13x13=169=2x81+0x27+0x9+2x3+1
9x9=81; 8x8=71 (base 9); 7x7=61 (base 8); 6x6=51 (base7)…..
11 2 =1001; base 2; 3x3=9=1x8+0x4+0x2+1=1001
111+222=1110; base 3; 13+26=39=1x27+1x9+1x3+0=1110
8x9=1001000-base 2; 8x9=2200-base 3; 8x9=1020-base 4…
15 in base 2 è 1111, in base 3 è 120, in base 4 è 33, in base 5 è 30…
2x2x2=11x2=22; base 3
3x3x3=21x3=123; base 4
110+101+111=1022; base 3; 12+10+13=35=1x27+0x9+2x3+2
221