What goes up but never comes down?

What work can one never finish?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

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

Can you count the number of quadrilaterals in the picture below?

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

what does the below math rebus puzzle mean?

What is full of holes but still holds water?

John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

John bought 150 chocolates but he misplaced some of them. His Father asked him how many chocolates were misplaced.
He gave the following answer to him:
If you count in pairs, one remains
If you count in threes, two remain
If you count in fours, three remain
If you count in fives, four remain
If you count in sixes, five remain
If you count in sevens, no chocolate remains.

Can you analyze the statements and tell us how many chocolates were lost?