What does an Island and the letter T have in common?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

Can you divide numbers from 1 to 9 (1 2 3 4 5 6 7 8 9) into two groups so that the sum of the numbers of each group is equal?

Note: 9 cannot be turned over to make it 6.

Can you count the number of squares in the figure below?

In the four images below, can you find the odd one out?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

What time is it when an elephant sits on a fence?

There were two grandmothers and their two granddaughters.
There were two husbands and their two wives.
There were two fathers and their two daughters.
There were two mothers and their two sons.
There were two maidens and their two mothers.
There were two sisters and their two brothers.
Yet there are only six, who are buried here,
All are born legitimate and relationships clear.
How can this happen?