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

What has 88 keys?

I am sure no one can have two things for dinner. what are they?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. 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
? ? ? ?

With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

Can it be possible to build a house that has all its four walls facing towards the South?

Cristina leaves home and then she makes exactly 3 left turns and returns home where she found 2 girls wearing the mask.

Who are these two masked girls?

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

A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?