What is the energy of a photon of orange light with a frequency of 4.84 x 1014 Hz?

What is the size of the matrix resulting from

When you have 25 numbers, and jake picks 3 random numbers and puts them back, what is the chance bob has of picking those 3 numbers when he picks 6 random numbers (without putting them back)? explain.

Cole says the distance between points (-5,0) and (0,-5)is 5 units. is he correct? explain why or why not.