Question

atunci calcu
(10p) 11 Efectuați 2 + 4 + 6 + ... + 50.
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Answer 1

Răspuns:

2+4+6+...+50

50×51÷2

25×51=1275

Answer 2

➪2+4+6+......+50

➪50•51:2 (suma lui Gauss)

➪2.550:2

➪1.275

➪Sᴘᴇʀ ᴄᴀ̆ ᴛᴇ-ᴀᴍ ᴀᴊᴜᴛᴀᴛ, sᴜᴄᴄᴇs シ