Question: Please show the step by step for solution. They are all have the hint. 4. (i) Find all values of b mod 5 such that

Please show the step by step for solution.

They are all have the hint.

4. (i) Find all values of b mod 5 such that the congruence $2+$+b50 mod5 has no solutions. (ii) For how many values of b mod 55 does the congruence w2+$+b20 mod55 have exactly 2 solutions. 5. Show that Z/4Z > Z/2Z >

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