What has to be broken before you can use it?

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If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?

What is the next number?

77, 49, 36, 18 ?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

Bay of Bengal is in which state?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

Buy me, smell me or deliver me, I do not change.

Who am I?

Two prisoners Jack and Jill are locked in a cell.
There is open window approx 40 feet above the ground of the cell.
They are never able to reach there.

Then they plan to escape by a tunnel and they start digging out.
After digging for more than 20 days, Jill comes with the different plan and they escaped.

what was the plan ?