What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Why is the Hole below a Lock?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

Its something that each of us devours,
Not just us but birds, beats, trees, and flowers,
Frets iron and nibbles steel,
Toil hard stones to meal,
Exterminates king, collapse town,
And blows the mountains down.

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

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 ?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?