Which is heavier: a ton of bricks or a ton of feathers?

Using Only Five 5's and any mathematical operator make sum as 37

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

What does below Rebus mean ?

esgg sgeg gegs gsge

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

Can you find the least possible number such that

If the number is divided by 3, it gives the remainder of 1;
If the number is divided by 4, it gives the remainder of 2;
If the number is divided by 5, it gives the remainder of 3;
If the number is divided by 6, it gives the remainder of 4.

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

No matter how little or how much you use me, you change me every month. What am I?