Why do we preferably have round manhole covers and not square ones?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

I have an eye but still cannot see.

Who am I?

A man always keeps a spare tyre in his car. To make full use of all the five tyres, he changes the tyres in a manner that for a distance of 1, 00,000 km, each of them runs the same distance.

Can you calculate the distance travelled by each tyre on that journey?

What Deficiency does the below rebus represent?

VIT_MIN

Can you find out the missing number in the grid?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?