Question

which material are required to write a letter with invisible letter and how can we read it​

Answer 1

Answer:

Explanation: Invisible ink is any substance that you can use to write a message that is invisible until the ink is revealed. You write your message with the ink using a cotton swab, dampened finger, fountain pen, or toothpick. Let the message dry

Answer 2

Answer:

Hello dear

So you know a letter is written to a person may it be a relative friend or your teacher or boss

Explanation:

Write it in a polite way

Use some formal words

Be in a limit of 60 to 100 words only

THANKS

PLEASE MARK ME AS BRAINLIEST