During which month do people sleep the least?

From a pack of 52 cards, I placed 4 cards on the table.

I will give you 4 clues about the cards:

Clue 1: Card on left cannot be greater than the card on the right.
Clue 2: Difference between the 1st card and 3rd card is 8.
Clue 3: There is no card of an ace.
Clue 4: There are no face cards (queen, king, jacks).
Clue 5: Difference between the 2nd card and 4th card is 7.

Identify four cards?

What is common among 11, 69, and 88?

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

What am I?

Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

There is something which is always coming but never arrives?

Which five letter word can be added at the end of below word to form a
valid word?

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1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10