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14 tháng 1 2017
Các số chẵn có 4 chữ số khi chia cho 5 dư 2 hơn kém nhau một đơn vị.Đầu tiên là số 1002 và kết thúc là 9992
Số số hạng các số có bốn chữ số khi chia cho 5 dư 2 là
( 9992 - 1002 ) : 5 + 1 = 1799 ( số hạng )
Tổng các số chẵn có bốn chữ số khi chia cho 5 dư 2 là
( 1002 + 9992 ) x 1799 : 2 = 9 889 103
Đáp số 9889103
tk mình nha
LA
3 tháng 1 2017
các số chẵn có 4 chữ số khi chia cho 5 dư 2 lần lượt là : 102 ; 112 ; ... ; 992
có số số chẵn có 4 chữ số khi chia cho 5 dư 2 là
﴾ 992 ‐ 102 ﴿ : 10 + 1 = 90 ﴾ số ﴿
tổng của chúng là :
﴾ 992 + 102 ﴿ x 90 : 2 = 49230
đáp số : 49230
tk nha bạn
thank you bạn
(^_^)
3 tháng 1 2017
Gọi các số thỏa mãn đề bài là abcd.
Ta có : abcd chia 5 dư 2
=> abcd + 2 chia hết cho 5
=> abcd + 2 thuộc { 1000 ; 1005 ; 1010 ; .....; 9995 }
=> abcd thuộc { 1003 ; 1008 ; ...; 9993 }
Vậy tổng của chúng là :
\(\frac{\left(9993-1003\right):5+1}{2}.\left(1003+9993\right)\)
\(=\frac{1799}{2}.10996\)
\(=1799.5498\)
\(=9890902\)
NH
9
5 tháng 1 2017
Số chẵn lớn nhất có 4 chữ số chia 5 dư 2 là:9992
Số chẵn bé nhất có 4 chữ số chia 5 dư 2 là:1002
số các số chia 5 dư 2 là:
(9992-1002):10+1=900 (số)
tổng của các số đó là:
(9992+1002)x900:2=4947300
5 tháng 1 2017
Số lớn nhất có bốn chữ số mà số chắn khi chia cho 5 dư 2 là 9992
Số nhỏ nhất có bốn chữ số mà số chắn khi chia cho 5 dư 2 là 1002
Có tất cả các số chắn có bốn chữ số khi chia cho 5 dư 2 là :
( 9992 - 1002 ) : 10 + 1 = 900 ( số )
Tổng của tất cả các số chắn có bốn chữ số khi chia cho 5 dư 2 là :
( 9992 + 1002 ) x 900 : 2 = 49230
Đáp số : 49230
Mk nhanh nhất nè
PP
1
10 tháng 1 2017
các số chẵn có 4 chữ số khi chia cho 5 dư 2 lần lượt là : 102 ; 112 ; ... ; 992
có số số chẵn có 4 chữ số khi chia cho 5 dư 2 là
﴾ 992 ‐ 102 ﴿ : 10 + 1 = 90 ﴾ số ﴿
tổng của chúng là :
﴾ 992 + 102 ﴿ x 90 : 2 = 49230
đáp số : 49230
ND
20
NT
12
LA
4 tháng 1 2017
các số chẵn có 4 chữ số khi chia cho 5 dư 2 lần lượt là :102 ; 112 ; ... ; 992
có số số chẵn có 4 chữ số khi chia cho 5 dư 2 là
﴾ 992 ‐ 102 ﴿ : 10 + 1 = 90 ﴾ số ﴿
tổng của chúng là
﴾ 992 + 102 ﴿ x 90 : 2 = 49230
đáp số : 49230
4 tháng 1 2017
Số chẵn lớn nhất có 4 chữ số chia 5 dư 2 là 9992
Số chẵn nhỏ nhất có 4 chữ số chia 5 dư 2 là 1002
Tổng của tất cả các số chẵn có 4 chữ số khi chia cho 5 dư 2 là :
( 9992 - 1002 ) : 5 + 1 = 1799 ( số )
Đáp số : 1799 số
LH
17 tháng 1 2017
GIẢI
các số chẵn có 4 chữ số khi chia cho 5 dư 2 lần lượt là : 1002 ; 1012 ; ... ; 9992
có tất cả số số có 4 chữ số khi chia 5 dư 2 là :
( 9992 - 1002 ) : 10 + 1 = 900 ( số )
tổng của chúng là :
( 9992 + 1002 ) x 900 : 2 = 4947300
đáp số : 4947300
Nghĩa nam lê sai bét tờ lè nhè ra
có 4 chữ số ko phải 3 chữ số đâu
NN
17 tháng 1 2017
các số chẵn có 4 chữ số khi chia cho 5 dư 2 lần lượt là : 102 ; 112 ; ... ; 992
có số số chẵn có 4 chữ số khi chia cho 5 dư 2 là ﴾ 992 ‐ 102 ﴿ : 10 + 1 = 90 ﴾ số ﴿
tổng của chúng là : ﴾ 992 + 102 ﴿ x 90 : 2 = 49230
đáp số : 49230
Số chẵn lớn nhất có 4 chữ số chia 5 dư 2 là:9992
Số chẵn bé nhất có 4 chữ số chia 5 dư 2 là:1002
số các số chia 5 dư 2 là:
(9992-1002):10+1=900 (số)
tổng của các số đó là:
(9992+1002)x900:2=4947300
đúng 100% luôn
Chia 5 dư 2 có tận cùng là 2 hoặc 7
Nhưng vì là số chẵn nên tận cùng sẽ là 2 .
Số bé nhất có 4 chữ số thỏa mãn : 1002
Số lớn nhất có 4 chữ số thỏa mãn : 9992
Số số thỏa mãn :
( 9992 - 1002 ) : 10 + 1 = 900 ( số )
Tổng các số đó :
( 9992 + 1002 ) x 900 : 2 = 4 947 300
đ/s: ....
GIẢI
các số chẵn có 4 chữ số chia cho 5 dư 2 lần lượt là : 1002 ; 1012 ; ... ; 9992.
có số số chẵn là :
( 9992 - 1002 ) : 10 + 1 = 900
tổng là :
( 9992 + 1002 ) x 900 : 2 = 4947300
đáp số : 4947300
Chia 5 dư 2 có tận cùng là 2 hoặc 7
Nhưng vì là số chẵn nên tận cùng sẽ là 2 .
Số bé nhất có 4 chữ số thỏa mãn : 1002
Số lớn nhất có 4 chữ số thỏa mãn : 9992
Số số thỏa mãn :
( 9992 - 1002 ) : 10 + 1 = 900 ( số )
Tổng các số đó :
( 9992 + 1002 ) x 900 : 2 = 4 947 300
100%la 4947300
Số chẵn lớn nhất có 4 chữ số khi chia cho 5 dư 2 là: 9992
Số chẵn bé nhất có 4 chữ số khi chia cho 5 dư 2 là: 1002
Số các số chẵn có 4 chữ số khi chia cho 5 dư 2 là:
( 9992 - 1002 ) : 10 + 1 = 900 ( số hạng )
Tổng của tất cả các số chẵn có 4 chữ số khi chia cho 5 dư 2 là:
( 9992 + 1002 ) x 900 : 2 = 4947300
Đáp số: 4947300
Mình làm đúng đó
Đảm bảo 100%
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nha mọi người
4947300
minh chac luon minh thi violympic roi
4947300. Đúng 1000000000000000000000000000000000000%luôn
cảm ơn các bạn !
thanksssssssss!
4947300 do ban
h minh nha
= 4947300 nha
tk cho mình nha
THANKS YOU
dung 100 % 4947300 minh thi roi
cảm ơn các bạn nhe !
TTTTTTTTTTHHHHHHHHHHAAAAAAAAAAKKKKKKKKKKSSSSSSSSSS!
4947300 là đúng nhất
Mình bảo đảm với các 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bạn hãy chọn vào số 497300 nhé
4947300 nhà đồ ngu
thank
nhớ kích cho tao
sao làm thế số 0
4947300 đúng 100% đó. nha!
4947300
đúng 100000000000000000000000000000000000% luôn
4947300
mình thi trên violympic rồi
494300 bạn yêu quý nhé
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chúc bạn một năm mới vui vẻ nhé
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4947300
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minh ko chiu tinh nen yoan nen day de COPPY
4947300
đáp án đúng là 4947300 đó nha
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kết quả là 947300
trên violympic mình làm rồi