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?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

Which is heavier: a ton of bricks or a ton of feathers?

Which point will the car reach to go out?

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

John's five friends Rachel, Jacob, Phoebe, Joey and Chandler live on the same road.

Rachel lives in the house: A, Jacob lives in the house: B, Phoebe lives in the house: C, Joey lives in the house:D, Chandler lives in the house: E

Mathematically
B*C*D = 1260
B + C + D = 2E
2A = E

The road numbers run from 2 to 222.

Can you tell me the house number of each of John's friends?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

Can you solve the below tricky visual equation?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?