Name a key which is hardest to turn.

How many triangles are there in the picture below?

Can you replace the question mark with the correct number in the below table sequence?

What kind of band never plays music?

What word is represented by this rebus?

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

What goes through cities and fields, but never moves?

Find the missing letter in the last circle logically in the given below picture.

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

John is selling fruits.
He sells grapes at $30, Dates $25, and a Wolfberry $45.
At what price does he sell fig?

PS: Logical Thinking