What occurs twice in a week, once in a year but never in a day?

After undergoing a successful eye operation, A blind girl has just boarded a train to her home. The doctor asked her to open the bandages after 3 hours. On her train journey, she opened the bandages and within a fraction of the time she commits suicide by jumping off the train.

Though her operation was successful, Why did she commit suicide?

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

How is this possible?

Three people are in a room. Ronni looks at the Nile. The Nile looks at Senthil. Ronni is married but Senthil is not married. At any point, is a married person looking at an unmarried person? Yes, No or Cannot be determined.

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

What is always in front of you but can’t be seen?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Why are all black people so quick ?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?