Solve The below Equation:

ALFA + BETA + GAMA = DELTA

Prove that the below maths equation is true.

8 + 8 = 91

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?

You see me once in June, twice in November, and not at all in May. What am I?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Your last good ping-pong ball fell into a narrow metal pipe embedded one foot deep in concrete.
How can you get it out undamaged, if all the tools you have are your tennis paddle, shoe laces, and plastic water bottle, which does not fit into the pipe?

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?