Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

Count the Triangle in the figure given below:

What does this rebus riddle means ?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

What brings you down but never up?

There are seven sisters in a house in a village where there is no electricity or any gadget.

Sister-1: Reading Novel
Sister-2: Cooking
Sister-3: Playing Chess
Sister-4: Playing Sudoku
Sister-5: Washing clothes
Sister-6: Gardening

what is Sister-7 doing ?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

Three cars are driving on a track that forms a perfect circle and is wide enough that multiple cars can pass anytime. The car that is leading in the race right now is driving at 55 MPH and the car that is trailing at the last is going at 45 MPH. The car that is in the middle is somewhere between these two speeds.
Right now, you can assume that there is a distance of x miles between the leading car and the middle car and x miles between the middle car and the last car and also, x is not equal to 0 or 1.
The cars maintain their speed till the leading car catches up with the last car and then every car stops. In this scenario, do you think of any point when the distance between any two pairs will again be x miles i.e. the pairs will be x distance apart at the same time ?