What is common among 11, 69, and 88?

Can you solve below mathematical equation?

2^1234 - 2^1233

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?

A little girl goes to the store and buys one dozen eggs. As she is going home, all but three break. How many eggs are left unbroken?

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

Which Travels Faster? Solve below famous picture riddle:

If a wheel has 54 spokes, how many spaces are there between the spokes?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

Can you find out the missing number in the grid?

What goes up but never comes down?