What goes up but never comes down?

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

What word does this rebus represent?

meta meta
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Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

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 ?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

Which tank will fill first?

What word is represented by this rebus?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?