Questions:

1) What decimal value does the 8-bit word 11000011₂ represent, if the word is interpreted as a signed magnitude number? Type a numerical answer; e.g., 123. (HINT: answer is not 195 or -61)

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2) Which of the following assignment statements create a Python variable? Click all that apply. (HINT: There is more than one answer)

a) my_var = 34

b) my_var = previously_created_var + 5

c) my_var = my_var + 3

d) my_var

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3) This statement is typed in the Python shell:

>>> p = 20

Which Python statement will change variable p so that it refers to the integer 10? Select all correct choices. (HINT: There is more than one answer)

a) p - 10 = p

b) p -= 10

c) p = 10

d) p = p - 10