Finding multiplicative inverses mod n. a.) Find the multiplicative inverse, mod 26, of each of the following: 7, 17, 25.

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Finding multiplicative inverses mod n.
a.) Find the multiplicative inverse, mod 26, of each of thefollowing: 7, 17, 25.
b.) Find the multiplicative inverse, mod 256, of 3.[Hint: You are solving 3x≡1(mod256).]
c.) Explain how you know the element 55 does not havean inverse modulo 70.
d.) Other than 0, which never has a multiplicative inverse,give three more reduced residues that does not have amultiplicative inverse modulo 49.