Question 1: (RSA)

Suppose that Alices RSA public key is (N, e) = (51, 13)

1. Find her private key, d.
2. If Bob encrypted the message M=3 using Alices public key, What is the ciphertext C?
3. Let S be the result when Alice digitally signs the message M = 9. What is S?

NOTE: plz, NO handwriting NO Picture.