Matematika

Pertanyaan

1-2+3-4+5-6+7-8+...-100
isi cara ya!!!!!!!!

2 Jawaban

  • Kelompokkan terlebih dahulu,
    (1-2) + (3-4) + (5-6) + ... + (99-100)
    -1 + (-1) + (-1) + ... + (-1) [Sebanyak 50 kali]
    -1 x 50
    -50
  • 1-2+3-4+5-6+7-8+9-10+11-12+13-14+15-16+17-18+19-20+21-22+23-24+25-26+27-28+29-30+31-32+33-34+35-36+37-38+39-40+41-42+43-45+46-47+48-49+50-51+52-53+54-55+56-57+58-59+60-61+62-63+64-65+66-67+68-69+70-71+72-73+74-75+76-77+78-79+80-81+82-83+84-85+86-87+88-89+90-91+92-93+94-95+96-97+98-99+100= -100

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