Which is Odd One Out and why?

4377

3954

9862

8454

9831

who is silent in the parliament?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

What does below Rebus say?

XLR8

If eleven plus two equals one, what does nine plus five equal?

Rose, Lily and Jasmine decided to buy flowers for their moms on Mother's Day. One of them bought lilies, the other roses, and the third one jasmines.
'It's funny!' said the girl with roses, 'we bought roses, jasmines and lilies, but none of us bought the flowers matching her name'.
'You're right!', said Lily.
What kind of flowers did each of the girls buy?

You walk into a creepy house by yourself. There is no electricity, plumbing, or ventilation. Inside you notice 3 doors with numbers on them. Once you open the doors you will die a particular way. Door No.1 You’ll be eaten by a lion who is hungry. Door No.2 You’ll be stabbed to death. Door No.3 There is an electric chair waiting for you. Which door do you pick?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

If 21x = 79x, what is the value of x?