Consider the following problem:  1391(mod 11) = _________ Sh…

Consider the following problem:  1391(mod 11) = _________ Show how Fermat’s Little Theorem can be used to solve this problem. Express your answer as a non-negative integer less than the modulus. Note:  To avoid the need for typing superscript exponents, you may use the notation ‘x^n’ or the expression ‘x to the nth’ (with numbers in place of x and n), to represent xn.

Prove, or provide a counterexample to disprove, the followin…

Prove, or provide a counterexample to disprove, the following statement:             “The function f : ℝ ⟶ ℤ defined by f(x) = ⌊ 2x ⌋ is a bijection.” Use good proof technique.  Remember that a bijection is both one-to-one (injective) and onto (surjective).  To prove, you must demonstrate both properties are true; to disprove, you only need a counterexample that shows one of the properties is not valid. Grading rubric:1 pt.  Indicate whether you will be proving or disproving the assertion.  Also, if proving, state both definitions, one-to-one and onto; if disproving, state the definition you plan to disprove.  1 pt.  State any givens and assumptions.1 pt.  Clearly explain your reasoning.1 pt.  Remember to state the final conclusion at the end of the proof. Note:  To avoid the need for typing special symbols, instead of using the floor symbols in the function definition ⌊ 2x ⌋ you may use the expression ‘floor of ( 2x )’.