What is at the end of a rainbow?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

What number should come in place of the question mark below?

What seven-letter word has hundreds of letters in it?

Can you move 2 matchsticks to form four equal sized squares.

You are provided with a grid (as shown in the picture). Can you fill the squares with numbers 1-8 in a manner that none of the two consecutive numbers are placed next to each other in any direction (vertically, horizontally or diagonally?)

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

You have two bottles of pills marked with labels A and B. The pills are identical. The doctor has asked you to take one A pill and one B pill daily. You cant take more or less than that.

While taking out the pills one day, you took out one pill from A and by mistake took out two from B. You have no idea which pill is which now.

You cant throw away the expensive pills. What will you do now?

What does below rebus means ?