* Write a program that accepts two different strings and returns the number * characters that are different. Either string can be null, or of any length. of * If one string is null and the other is not, all of the characters are

Assume you are given a sequent XF A in Propositional Logic and you are able to derive, using Natural Deduction, both some formula B from X as well as its negation ¬B. Assume that the rule RAA is not available to you, otherwise all Natural Deduction rules we taught can be used. • Can you infer any property (satisfiable, unsatisfiable, tautology) of the formula A1 A... A An, provided X = {A1,..., An}? • Can you say anything about the validity of the sequent? Does its validity depend on which formula A represents? • In which way does the fact that we don't have RAA available influence your response?

I need the answer quickly

1. (3 points) Convert (137)10 to ( ) 16- Show your work to receive credit.