1+(1+2)+(1+2+3)+...+(1+2+3+4+5+6+7+8+9+10)=
Matematika
Mirahbuds
Pertanyaan
1+(1+2)+(1+2+3)+...+(1+2+3+4+5+6+7+8+9+10)=
1 Jawaban
-
1. Jawaban Anisazhf
1 + (1 + 2) + (1 + 2 + 3) + (1 + 2 + 3 + 4) + (1 + 2 + 3 + 4 + 5) + (1 + 2 + 3 + 4 + 5 + 6) + (1 + 2 + 3 + 4 + 5 + 6 + 7) + (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8) + (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9) + (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10)
= 1 + 3 + 6 + 10 + 15 + 21 + 28 + 36 + 45 + 55
= 4 + 16 + 36 + 66 + 100
= 222