Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Wednesday, Steve and Pam go to a restaurant to eat lunch. After eating lunch, they pay the bill. But Steve and Pam do not pay the bill. So…who does?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?