Răspuns :
a = 1+2+3+4+,,,,,+200
a = 200 x (200+1) : 2
a = 100 x 201
a = 20 100
Răspuns:
[tex]1 + 2 + 3 + ... + 200 = \\ \\ (1 + 200) \times 200 \div 2 \\ 201 \times 200 \div 2 \\ 40200 \div 2 = \\ 20100[/tex]
asa se face
a = 1+2+3+4+,,,,,+200
a = 200 x (200+1) : 2
a = 100 x 201
a = 20 100
Răspuns:
[tex]1 + 2 + 3 + ... + 200 = \\ \\ (1 + 200) \times 200 \div 2 \\ 201 \times 200 \div 2 \\ 40200 \div 2 = \\ 20100[/tex]
asa se face