Επανάληψη
Authored by Dimitris Giannousopoulos
Mathematics
10th Grade
Used 1+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Αν α=2 και β=5, ποιο είναι το άθροισμα α+β;
6
7
8
10
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Αν α=2 και β=-5, τότε α∙β= ;
-7
-10
10
3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Αν α=2, τότε α+8= ;
10
6
12
8
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ποιο από τα παρακάτω είναι πάντα αληθές για οποιουσδήποτε αριθμούς α και β;
Αν α∙β=0, τότε α=0 ή β=0
Αν α∙β=0, τότε α=0 και β=0
Αν α+β=0, τότε α=0 ή β=0
Αν α=β, τότε α∙β=0
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Αν x=3, τότε x+5= ;
5
7
8
8
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Υπολογίστε: -2[ -3(1−x) − (x+3) ], για x=2
4
8
12
-4
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Αν οι αριθμοί Α= -3y+4z και Β= y−2z είναι αντίθετοι, τότε ισχύει:
y=z
y=−z
y=2z
y=z
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