Cho A=7777777......7777777} 2005 chữ số 7. Hỏi A :9 dư bao nhiêu ?
Những câu hỏi liên quan
7777777 ( bảy chữ số 7) +14n chia hết cho 9 ( n<30)
7777777 + 7777777 - 7777777 x 7777777 + 7777777
tim x thuộc N* biết A = 11111111111...1-7777777....7 là số chính phương và 2x chữ số 1 và x chữ số 7
tìm 1 cặp x;y thỏa mãn 7^3=x^2-y^2
giải chi tiết hộ mình vs
7777777 +14n chia hết cho 9 ( n<30)
bài 1 : tim x thuộc N* biết A = 11111111111...1-7777777....7 là số chính phương và 2x chữ số 1 và x chữ số 7
bài 2 :
Cmr : a 10n +72n -1 chia hết cho 81
b 1111111( 81 chữ số 1 ) chia hết cho 81
bài 3 : Biết a+b + c chia hết cho 7 . CMR số abc chia hết cho 7 thì a = b
bài 4 :Tìm một số biết 9 lần số đó bằng số đó viết thêm chữ số 0 vào giữa chữ số hàng chục và đơn vị
số 7777777 gọi ma à
gọi rồi mà thấy ma nào đâu
chỉ thấy mấy thánh thân trong nhà thôi
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7777777+67674364876327+376274673264:4563526=?
7777777+67674364876327+376274673264:4563526=14611857.04373504
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1+22+333+4444+55555+666666+7777777+88888888+999999999+1010101010=?
trình bày cách giải mình mới cho đúng
1+22+333+4444+55555+666666+7777777+88888888+999999999+1010101010
= (1+999999999) + (22+88888888) + (333+7777777) + (4444+666666) + (55555+1010101010)
= 1 000 000 000 + 88888910 + 7778110 + 671110 + 101056565
= 1198394695
chẳng có quy luật gì cả -_-
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Đọc tiếp
2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222224444444444444444444444444444465555555555555555555555555555555650000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000999999999999999990000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000,/.../000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000-0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000-000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000098+++++++++6727287382382738777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777=
