Question

Viết 50 phép cộng số nguyên

Answer 1

Nguyên dương hay âm

Answer 2

\(1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+\left(-1\right)+\left(-2\right)+\left(-3\right)+\left(-4\right)+\left(-5\right)+\left(-6\right)+\left(-7\right)+\left(-8\right)+\left(-9\right)+\left(-10\right)+\left(-11\right)+\left(-12\right)+\left(-13\right)+\left(-14\right)+\left(-15\right)+\left(-16\right)+\left(-17\right)+\left(-18\right)+\left(-19\right)+\left(-20\right)+\left(-21\right)+\left(-22\right)+\left(-23\right)+\left(-24\right)+\left(-25\right)=0\)