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Which is the smallest single digit number 0 or 1?
0.
What is Frequency shift keying?
FSK refers to a communications protocol in which different values of encoded (binary) information are signaled by modulating the frequency, and the start and stop of different bits are determined by the expected timing of each shift in frequency. If there was no shift, the next digit is the same as the previous digit (0 and 0 or 1 and 1), and if it shifted, then the next digit is the opposite (1 to 0 or 0 to 1).
What five numbers appear as the last digit of the multiples of 4?
0, 2, 4, 6, 8
Is 628 divisible by 5?
No. To be divisible by 5 the last digit of the number must be one of {0, 5}. As the last digit of 7529 is neither 0 nor 5, it is not divisible by 5.
What is the last digit of any multiple of 10?
Oh, dude, the last digit of any multiple of 10 is always 0. It's like the universe's way of saying, "Hey, I got you, here's a nice round number for ya." So, if you see a number that ends in 0, you can be pretty confident it's a multiple of 10.
