Binaries

[Forte]

I don't really get binaries, can someone explain what it is?

Say for example, how would you make 101101 in base 2 to be equivalent [blank] in base 10? Or 5A in base 16 to be equivalent to [blank] in base 10?

[Bazzy]

here is how numerical bases work:
101101 = 1*2⁵ + 0*2⁴ + 1*2³ + 1*2² + 0*2¹ +1*2⁰ = 45 (decimal) = 4*10¹ + 5*10⁰

0x5A = 5*16 + 10 = 90 (dec)

This may help you: http://www.cplusplus.com/doc/hex/