There was an aeroplane crash, every single person died, but two people survived. How is this possible?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

What does below pictogram mean?

How can you leave a room with two legs and return with six legs?

John was visiting his friend Jacob. He found out that his friend's wife had just killed a burglar in self-defense.
John asks Jacob about what happened and he told that "His wife was watching television when suddenly the bell rang. She thought that it is her husband Jacob but she found the burglar who attacked her instantly and she got so frightened that she killed the burglar immediately with the knife.
John asked the police to arrest his friend's wife. Why?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?