1+5+9+13+17+...+x = 501501
tim x
nhanh nhe mn, sang mai minh can roi
ai nhanh tick
tim x biet :1+5+9+13+16+...+x=501501
Tim x:
1+5+9+13+.....+x=501501
1+5+9+13+17+...+x=501501
tìm x biết 1+5+9+13+17+...+x =501501
tìm x biết 1+5+9+13+17+...+x =501501
Tìm x : 1 + 5 + 9 + 13 + 17 +...+ x = 501501
TÌM X
1+5+9+13+17+....+X= 501501
Tìm x, biết :
1+5+9+13+17+...+x=501501