5888

12221

sai

16660 nha

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Tuần qua em giúp việc cho mẹ rất tốt.hôm thứ hai tuần trước em giúp mẹ quét nhà, lau nhà.Thứ ba em giúp mẹ lau bàn,lau ghế.Thứ tư em tưới rau,tưới hoa cho mẹ.Thứ năm em dọn nhà cho mẹ.Thứ sáu em bàn đá, ghế đá cho mẹ.Thứ bảy em bẻ đậu cho mẹ.Chủ nhật em nấu cơm cho mẹ.Em rất vui khi giúp mẹ việc nhà để mẹ khỏe hơn.

Tuần qua em giúp việc cho mẹ rất tốt.hôm thứ hai tuần trước em giúp mẹ quét nhà, lau nhà.Thứ ba em giúp mẹ lau bàn,lau ghế.Thứ tư em tưới rau,tưới hoa cho mẹ.Thứ năm em dọn nhà cho mẹ.Thứ sáu em lau bàn đá, ghế đá cho mẹ.Thứ bảy em bẻ đậu cho mẹ.Chủ nhật em nấu cơm cho mẹ.Em rất vui khi giúp mẹ việc nhà để mẹ khỏe hơn.

n= int(input(" nhap n : "))
i= 1 
for i in range ( 1, n+1):
    i= i * (i+1)
    print("tich",i)
    

n= int(input(" nhap n : "))
s = 1 
for i in range ( 1/2, 1/ 2*n):
    if(1<n<=20):
    s = s + i
print("tong",s)