What is full of holes but still holds water?

If 21x = 79x, what is the value of x?

I look at you, you look at me I raise my right, you raise your left. What am I?

Can you make a six-letter word using the letters N, A and B ?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

You can hear me, but you can't touch or see me.

What am I?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

Count the number of times the letter "F" appears in the following paragraph:

FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.

What Time Should the last watch show in the below figure?