Can you decipher the two rows to find the hidden word?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?

How many words can a pen with half refill write?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

I am a word that begins with the letter “i.” If you add the letter “a” to me, I become a new word with a different meaning, but that sounds exactly the same. What word am I?

No matter how little or how much you use me, you change me every month. What am I?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?