What famous saying does this rebus mean?

COME SERVED <---
COME SERVED
COME SERVED
COME SERVED
COME SERVED

John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?

O_er_t_o_

Complete the missing letters of the given word.

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

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

What do you answer even though it never asks you questions?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.