Consider the augmented grammar given below :

S' → S
S → 〈L〉 | id
L → L,S | S

Let I₀ = CLOSURE ({[S' → ●S]}). The number of items in the set GOTO (I₀ , 〈 ) is: _____.

Which of the following protocol pairs can be used to send and retrieve e-mails (in that order)?

The value of 3⁵¹ mod 5 is_________.

In an RSA cryptosystem, the value of the public modulus parameter n is 3007. If it is also known that $$\varphi $$(n) = 2880, where $$\varphi $$() denotes Euler's Totient Function, then the prime factor of n which is greater than 50 is ______.