13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

I welcome the day with a show of light, I stealthily came here in the night. I bathe the earthy stuff at dawn, But by noon, alas! I'm gone.

Imagine you are in a room with no windows or doors. How will you get out?

Three people are in a room. Ronni looks at the Nile. The Nile looks at Senthil. Ronni is married but Senthil is not married. At any point, is a married person looking at an unmarried person? Yes, No or Cannot be determined.

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

It begins where the time ends.
Its second is an expression of surprise.
Its third is a question.
Its fourth is urinate.
It ends with a drink.

Which country it is?

Can you identify the famous TV character from the rebus below?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT