Can you find out which number multiplied by itself will give the output as 12345678987654321?

A mother bought three dress for her triplets daughters(one for each) and put the dresses in the dark. One by one the girls come and pick a dress.
What is the probability that no girl will choose her own dress?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

I have feet, but no legs. Which animal Am I?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

What can you hold in your right hand, but never in your left hand?

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

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

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?