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

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

People make me, save me, change me, raise me. What am I?

What does below Rebus say?

XLR8

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

Why is the Hole below a Lock?

There are three Athletes (John, Tarun and Harish) and their individual Coaches (Jacob, Meenaxi and Priyanka) standing on the shore.
No Coach trusts their Athlete to be near any other Coach unless they are also with them.
There is a boat that can hold a maximum of two persons.
How can the six people get across the river?

Solve the mathematical equation in the picture below.