số cuối là
123 + 30 x 2 - 2 = 181
tổng các số đó là
(181 + 123) x 30 : 2 = 4560
Số đầu tiên là 123.
Số cuối cùng là 181.
Số các số hạng là 30.
Tổng của các số đó là:
(181+123) x 30 :2=4560
Đ/s:4560.
số cuối là:
123 + 30 x 2 - 2 = 181
tổng các số đó là:
(181 + 123) x 30 :2 = 4560
đáp số : 4560
Bằng 4560 bạn nhé!^-^
Đúng 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000% luôn bạn nhé!^-^
Chúc bạn học tốt nha!^-^