What is wrong in the below Picture?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Replace the question mark with the correct number below.

I have branches, but no fruit, trunk or leaves. What am I?

What's the best place to go shopping in the ocean?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

In an office's desk, you find a unique method that shows the current day of the month. Two numbered cubes are used to depict the current date.

Can you find out the numbers on both the cubes so that each date can be mentioned using them?

Please note that you have to use both the cubes to display any date. Thus the 1st day must be represented by 01 and so on.

10+10 and 11+11 can give you the same answer.

Explain how?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

Jenifer and Jesica are having a conversation.

Jenifer: I am definitely not over 30.
Jesica: I am 28 and you are surely 5 years older to me at least.
Jenifer: No, you are at least 29.

You are told that both of them are lying throughout in the conversation. Can you find their respective ages?