Question

2
$2 {}^{6} -2 {}^{5} + 2 {}^{4} - 2 {}^{3} + 2 {}^{2} - 2 {}^{1} + 2 {}^{0}$

Answer 1

64-32+16-8+4-2+1=

32+16-8+4-2+1=

48-8+4-2+1=

40+4-2+1=

44-2+1=

42+1= 43