Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

A man embarked on a questionnaire game. He kept asking the same question to whomever he found. The answer each time was different.

Can you guess what the question was?

Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

Can you find a five letter word that is left with only two letters if one is removed?

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?

Bopanna was working on a murder case when he received a message about the location of the murder weapon.
The message was encrypted as below.

"deb mitciv eht edisni neddih si nopaew redrum ehT"

Tell me the location of the murder weapon.

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

I have two sand hourglasses:
1. A 7 minute one and
2. An 11-minute one.

Using just these 2 sand hourglasses, how can I measure time as 15 minutes?

The centre of the third figure is empty. What digit should fit inside?