Question

va rog mult ajutati-ma dau coroama este urgent

Answer 1

a) 2 = 2
    9 = 3^2
    cmmmc(2,9) = 2 x 3^2 = 18
b) 7 = 7
    14 = 2 x 7
    cmmmc(7,14) = 2 x 7 = 14
c) 2 = 2
    3 = 3
    4 = 2^2
    cmmmc(2,3,4) = 2^2 x 3 = 12
d) 4 = 2^2
    5 = 5
    cmmmc(4,5) = 2^2 x 5 = 20
e) 2 = 2
    3 = 3
    5 = 5
    cmmmc(2,3,5) = 2x3x5 = 30
f) 15 = 3 x 5
    30 = 2 x 3 x 5
    45 = 3^2 x 5
    cmmmc(15,30,45) = 2 x 3^2 x 5 = 90
g) 20 = 2^2 x 5
    40 = 2^3 x 5
    50 = 2 x 5^2
    cmmmc(20,40,50) = 2^3 x 5^2 = 200
h) 2 = 2
    4 = 2^2
    6 = 2 x 3
    8 = 2^3
    cmmmc(2,4,6,8) = 2^3 x 3 = 24
i) 10 = 2 x 5
   15 = 3 x 5
   30 = 2 x 3 x 5
   60 = 2^2 x 3 x 5
   cmmmc(10,15,30,60) = 2^2 x 3 x 5 = 60
j) 11 = 11
   33 = 3 x 11
   66 = 2 x 3 x 11
   99 = 3^2 x 11.
   cmmmc(11,33,66,99) = 2 x 3^2 x 11 = 198

Ex.18
Se calculeaza cmmmc(4,6,10):
4 = 2^2
6 = 2 x 3
10 = 2 x 5
cmmmc(4,6,10) = 2^2 x 3 x 5 = 60
Cel mai mic mic numar de elevi care se pot alinia in coloana de cate 4, 6 sau 10 elevi este 60.

 

Answer 2

a) 2 si 9 sunt prime intre ele => [2,9] =2x9=18
b) 7 = prim
14 = 2x7  => [7,14 ] = 2x7 =14
c) 2=2
3=3
4=2^2 => [2,3,4] = 2^2x3 =4x3=12
d) 4=2^2 
5=5 => [4,5] =4x5=20
e)2=2
3=3
5=5 => [2,3,5] = 2x3x5 = 30
f) 15 =3x5
30 = 2x3x5
45=3^2x5  => [15,30,45] = 2x3^2x5 =90
g) 20=2^2x5
40=2^3x5
50 =2x5^2  => [20,40,50] =2^3x5^2 =8x25=200
h) 2=2
4=2^2
6=2x3
8=2^3  => [2,4,6,8] =2^3x3=8x3=24
i)10=2x5
15=3x5
30=2x3x5
60=2^2x3x5  => [10,15,30 60] = 2^2x3x5 =60
j) 11=11
33=3x11
66=2x3x11
99=3^2x11  => [11,33,66,99] = 2x3^2x11 =198

18) 4=2^2
6=2x3
10=2x5  => [4,6,10] =2^2x3x5=60