What occurs twice in a week, once in a year but never in a day?

What do you call a fish without an eye?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

A pregnant woman is preparing to name her seventh child. Her children's names so far are Dominique, Regis, Michelle, Fawn, Sophie, and Lara. What will she name her next child -- Jessica, Katie, Abby or Tilly?

Why is the Hole below a Lock?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?