Rectify the following equality 101 - 102 = 1 by moving just one digit.

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

In an Art Gallary, When the clock hit 11 am, Artist hung the painting number 30. When it struck 4 pm, he hung painting number 240 and when it struck 7:30 pm, he hung painting number 315.

Can you determine, which painting number will he hang when the time is 9:20 pm?

When can we add 2 to 11 and get 1 as the correct answer?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

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

Next Number in the Series,

5, 16, 49, 104, ?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

What does this rebus means ?

PROG WORKRESS