Số lớn nhất có 4 chữ số khác nhau là 9876
=> Tổng 2 số là 9876
Gọi số bé là a số lớn là b. Theo đề bài, ta có:
b - a = 2a
=> b = 2a + a
=> b = 3a
Mà tổng 2 số là 9876
=> a + b = 9876
=> a + 3a = 9876
=> 4a = 9876
=> a = 9876 : 4
=> a = 2469
=> Số lớn là: 2469 x 3 = 7407
KL: số lớn là 7407
Số lớn nhất có 4 chữ số khác nhau là : 9876
=> Tổng 2 số đó = 9876
Gọi a là số lớn b là số bé , ta có :
a - b = 2b
a = 2b + b
a = 3b
Vậy số lớn gấp 3 lần số bé , ta nói số bé = \(\frac{1}{3}\)số lớn .
Tổng số phần bằng nhau là :
1 + 3 = 4 ( phần )
Số bé là :
9876 : 4 = 2469
Số lớn là :
2469 x 3 = 7407
Đ/s: Số bé : 2469
Số lớn : 7407
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