What is common among 11, 69, and 88?

John speaks the truth only once a day in a week. Below are a few hints for you:

First: Days are Sunday, Monday and so on.
Second: One day he says, "I lie on Monday and Tuesday".
Third: On the next day, he says, "Today is either Thursday, Saturday or Sunday".
Fourth: On the next day, he says, "I lie on Wednesday and Friday".

Can you identify the day on which he speaks the truth?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

Why is a river so rich ?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

who is silent in the parliament?

Our product and our sum always give the same answer. Who are we?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

There's a day, that comes around once a year.
To celebrate the man, you hold dear.
He gave you life, love and will pick you up if you fall.
When it comes to guys like him, He's the best of all.
Who is he?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?