Question

afla ce valori pot lua literele:
8xa+6<71 a € {
bx5+3<39 b € {
cx7-10<55 c € {
90<123-dx5<108 c € {
120<ex6+104<158 e € {
2<f:4-3<6 f € {
​

Answer 1

Răspuns:

Salutare❗

a)

8×a+6<71 a€{0,1,2,3,4,5,6,7,8}

8×0+6=14

8×1+6=15

8×2+6=22

8×3+6=39

8×4+6=38

8×5+6=46

8×6+6=54

8×7+6=62

8×8+6=70

deci a are 9 valori.

b)

b×5+3<39 b€{0,1,2,3,4,5,6,7}

0×5+3=3

1×5+3=8

2×5+3=13

3×5+3=18

4×5+3=23

5×5+3=28

6×5+3=33

7×5+3=38

deci b are 8 valori.

c)

c×7-10<55 c€{2,3,4,5,6,7,8,9}

2×7-10=4

3×7-10=11

4×7-10=18

5×7-10=25

6×7-10=32

7×7-10=39

8×7-10=46

9×7-10=53

deci c are 8 valori

d)

90<123-d×5<108 d€{4,5,6}

90<123-4×5=103<108

90<123-5×5=98<108

90<123-6×5=93<108

deci d are 3 valori

e)

120<e×6+104<158 e€{3,4,5,6,7,8}

120<3×6+104=122<158

120<4×6+104=128<158

120<5×6+104=134<158

120<6×6+104=140<158

120<7×6+104=146<158

120<8×6+104=152<158

deci e are 6 valori

f)

2<f:4-3<6 f€{24,28,32,}

2<24:4-3=3<6

2<28:4-3=4<6

2<32:4-3=5<6

deci f are 3 valori.

Sper că te-am ajutat ❗