1.- The equivalent fraction to 1.03333... is:
a) 92/90
b) 31/90
c) 31/30
d) None of them
2.- The equivalent fraction to 21.333... is:
a) 64/9
b) 213/100
c) 64/3
3.- Which of the following sentences is true?
a) All the Whole Numbers are Natural Numbers
b) 132/12 is not a Whole Number
c) √169 is an Irrational Number
4.- Which of these expressions is true?
a) 1.5 belongs to the interval (3/2,8)
b) 1/3 belongs to the interval (0.3,0.33)
c) 1/7 < 0.1428
5.- Which is the interval represented in the line?
a) [-1, 4)
b) [-1, 3.9]
c) [-1, 4]
d) a) and b)
6. |x| < 7
a) (-∞,-7)U(7,∞)
b) [-7,7]
c) (-7,7)
d) (-∞,7]U[7,∞)
7. |x| > 1
a) (-1,1)
b) [-1,1]
c) (-∞,-1]U[1,∞)
d) (-∞,-1)U(1,∞)
8.- The absolute error when we approximate π by 3.142 is
a) 0.1416
b) lower than a hundredth
c) lower than a tenth
d) lower than a thousandth
9.- and the realtive error is
a) 0.000129
b) lower than 0.1%
c) lower than 0.01%
d) 0.001
10.- Calculate the amount that we will obtain if we deposit 5.000 € in a bank for 6 years if the interest rate is 3%
a) 5970,26 €
b) 6418,26 €
c) 5873,24 €
d) 5631,48 €
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