Which color of visible light has the shortest wavelength? the longest wavelength? the lowest frequency? the highest frequency?

Shortest wavelength: Violet  

In the visible spectrum the shortest wavelength is of violet. Violet is right before ultraviolet in the spectrum.  And according to the wave equation (i.e. speed= frequency * wavelength), frequency is inversely proportional to wavelength so shortest wavelength means higher frequency as a result it has higher energy.

The longest wavelength is of the color red. As per the Wave equation (i.e. speed= frequency * wavelength), frequency is inversely proportional to wavelength so red having the longest wavelength has a lower frequency.

The colors from shortest to longest wavelength:  

Violet  

Blue

Green

Yellow

Orange

Red  

Whilst white light is the mixture of the colors of the visible spectrum  

a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be? a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be? a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be? a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be? a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be?

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which statement about this sum is true? −245+2.7