Răspuns:
a) S = 500
b) S = 800
c) S = 487
Explicație pas cu pas:
(a)
[tex]\bf S = 3 + 12 + 45 + 97 + 17 + 83 + 55 + 88 + 100[/tex]
[tex]\bf S = (3 + 97)+ (12 + 88)+ (45 + 55)+ (17 + 83 )+ 100[/tex]
[tex]\bf S = 100+ 100+ 100+ 100+ 100[/tex]
[tex]\boxed{\bf S = 500}[/tex]
(b)
[tex]\bf S = 200 + 175 + 113 + 35 + 25 + 87 + 165[/tex]
[tex]\bf S = 200 +( 175 +25) + (113 + 87) + (35 + 165)[/tex]
[tex]\bf S = 200 +200 +200 + 200[/tex]
[tex]\boxed{\bf S = 800}[/tex]
(c)
[tex]\bf S = 19 + 32 + 58 + 81 + 42 + 91 + 55 + 9 + 100[/tex]
[tex]\bf S = (19+81) + 32 + (58 + 42)+ (91 + 9) +55+ 100[/tex]
[tex]\bf S = 100+ 32 + 100 +100 +55+ 100[/tex]
[tex]\bf S = 400+ 32 +55[/tex]
[tex]\boxed{\bf S = 487}[/tex]
==pav38==
