1) (A) A channel has a B.E.R. of2 X 10*4. We send 10 Bit words. Find: a) Probability ofa double bit error in a word. b) The probability of the above event happening twice in a row that is two consecutive words with two bits in error. We add a parity bit to the above system for a total of 11 bits per word. a) Find the exact expression for parity failure. b) Give an approximation for the above expression. (B)