Given that

(78)^9 = 6
And (69)^4 = 11

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)

Can you find the key in the picture below?

15 caves are arranged in a circle at the temple of doom. One of these caves has the treasure of gems and wealth. Each day the treasure keepers can move the treasure to an adjacent cave or can keep it in the same cave. Every day two treasure seekers visit the place and have enough time to enter any two caves of their choice.

How do the treasure seekers ensure that they find the treasure in the minimum number of possible days?

What word is identified by the below rebus?

Your Your Your Your Your
Your Your Your Your Your

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

what does the below rebus means?

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

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

On a bus, there is a 26-year-old pregnant lady.
A 30-year-old policeman.
A 52-year-old random woman.
And the 65-year-old driver.

Who is the youngest?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.