Question

scrie in baza 10 numerele:1111,10001,101011,11111101

Answer 1

$1111_{(2)}= 2^0+2^1+2^2+2^3 = 1+2+4+8= 15_{(10)}\\10001_{(2)}=2^0+2^4= 1+16 = 17_{(10)}\\101011 _{(2)}= 2^0 +2^1+2^3+2^5 = 1+2+8+32= 43_{(10)}\\11111101_{(2)}= 2^0+2^2+2^3+2^4+2^5+2^6+2^7=\\=1+4+8+16+32+64+128=253_{(10)}$