You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

In a town, there are four houses located at different distances from each other. Following are the distances:

The third house is 60 meters apart from the first house.
The fourth house is 40 meters apart from the second house.
The third house is 10 meters nearer to the fourth house than it is to the second house.

Can you find out the distance between the fourth and the first house?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?

The Little ant seems to be always confused. Do you know why?

Can you move 2 matchsticks to form four equal sized squares.

What breaks yet never falls, and what falls yet never breaks?