What is full of holes but still holds water?

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

Decode below rebus
D
N
A
T
S , D

What does the below rebus puzzle mean?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

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

One day Jenifer meets the Lion and the Tiger in the Forest of Forgetfulness. She knows that the Lion lies on Mondays, Tuesdays, and Wednesdays, and tells the truth on the other days of the week. The Tiger, on the other hand, lies on Thursdays, Fridays, and Saturdays, but tells the truth on the other days of the week. Now they make the following statements to Jenifer:

Lion: Yesterday was one of my lying days.

Tiger: Yesterday was one of my lying days too.

What day is it?

What does the below rebus riddle means?

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?