Which of given represent a variable and which a constant

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Indicate which of the following represent a variable and which a constant:
a. The number of letters in the alphabet

b. The number of hours in a day

c. The time at which you eat dinner

d. The number of students who major in psychology at your university each year

e. The number of centimeters in a meter

f. The amount of sleep you get each night

g. The amount you weigh

h. The volume of a liter

Reference no: EM131342075

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