Question

how many colours in rainbow?

Answer 1

There are seven colours in a rainbow.

Red, Indigo, Blue, Green, Yellow, Orange, Violet

Answer 2

Hey mate, here is your answer.
Rainbow have 7 colours.
Violet - V
Indigo- I
Blue- B
Green- G
Yellow- Y
Orange- O
Red- R
You can learn this as VIBGYOR.
I HOPE THIS WILL HELP YOU.