Please not see the answer before think.

You should try and thinking to solve the questions.

View Questions

Although this is a simple question and easy… But it can be interesting for many people.

Question 1

Final Answer

pixel.setGreen(pixel.getRed());
pixel.setBlue(pixel.getRed());

Question 2

Final Answer

pixel.setGreen(pixel.getRed());
pixel.setBlue(pixel.getRed());

Question 3

Final Answer

avg = (pixel.getRed() + pixel.getGreen() + pixel.getBlue())/3;
pixel.setRed(avg);
pixel.setGreen(avg);
pixel.setBlue(avg);

Question 4

Final Answer

avg = (pixel.getRed() + pixel.getGreen() + pixel.getBlue())/3; 
pixel.setRed(avg);
pixel.setGreen(avg);
pixel.setBlue(avg);