Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

Rob is taller than Edwin, and Jurgen is shorter than Rob.
Of only one of the following statements, we now certainly know it is correct:

A.Edwin is taller than Jurgen
B.Jurgen is taller than Edwin
C.It cannot be determined if Jurgen or Edwin is the tallest.

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Can you solve the below tricky visual equation?

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

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

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

Guess the hidden movie name?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?