What four weights can be used to balance from 1 to 30 pounds?

What number should come in place of the question mark below?

Find the missing letter in the last circle logically in the given below picture.

What number comes next in the series?

5 15 5 18 5 24 14 20 _

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

If we change the South-East direction into North and North-East into West and all others similarly.
Can you find out which direction will be in the place of South-West direction?

Can you find out what is missing?

1 3 5
2 4 ?

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

Can you solve the below tricky visual equation?

A spaceship was lost. The detective was given a piece of paper. This was the location of the spaceship! This is what the slip had scribbled on it:
Juice, Umbrella, Potato, Ice, Tomato, Elephant, Rice.

Where is the spaceship?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?