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Khách

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30 tháng 6 2016

Gọi hai chữ số hàng chục và đơn vị của số đó là ab.

Số nhỏ . 100 + ab = số lớn

Số nhỏ là 1 phần. Số lớn là 100 phần + ab.

Vậy 3663 - ab chia hết cho ( 100 - 1 ) = 99. 

Vậy ab = 00 ; 99

Số phải tìm là:

( 3663 - 0 ) : 99 . 100 + 0 = 3700

Số phải tìm là:

( 3663 - 99 ) : 99 . 100 + 99 = 3699

16 tháng 8 2015

3700 và 3699

**** cái nha

7 tháng 10 2016

3700 và

 3699 nha

27 tháng 9 2017

Bài 1

a0b = ab x 7

a x 100 + b = ( a x 10 + b ) x7

a x 100 + b = a x 10 x 7 + b x 7

Cùng bớt đi b

a x 100 = a x 70 + b x 6

Cùng bớt đi a x 70

a x 30 = b x 6

Cùng chia cho 6 

a x 5 = b x 1

=>a = 1 ; b = 5

Vậy số đó là 15

2 bài kia bạn tự giải nha , mk lười lắm :)))))

24 tháng 5 2018

cau hoi nay la cau hoi co 3 chu so chu khong hai la 2chu so

14 tháng 2 2023

Gọi số có 4 chữ số cần tìm là \(\overline{abcd}\)

Theo đề ra, ta có: Khi xóa đi chữ số hàng chục và hàng đơn vị ta được số \(\overline{ab}\)

\(\overline{abcd}-\overline{ab}=3663\)

\(\overline{ab}\times100+\overline{cd}-\overline{ab}=3663\)

\(\overline{ab}\times99+\overline{cd}=3663\)

\(\overline{cd}=99\times\left(37-\overline{ab}\right)\)

Mà tích của 99 là một số tự nhiên bé hơn 100 nên có hai trường hợp là \(37-\overline{ab}=0\) hoặc \(37-\overline{ab}=1\)

Trường hợp 1: \(37-\overline{ab}=0\Rightarrow\overline{ab}=37\)

\(\Rightarrow\overline{cd}=0\)

Trường hợp 2: \(37-\overline{ab}=1\Rightarrow\overline{ab}=36\)

\(\Rightarrow\overline{cd}=99\)

Vậy số tự nhiên có 4 chữ số cần tìm là \(3700;3699\).

Gọi số cần tìm là \(\overline{abcd}\)

Xóa đi chữ số hàng chục và hàng đơn vị ta được số ab

Theo bài ra ta có: 

\(\overline{abcd}-\overline{ab}=3663\)

\(100.ab+cd-ab=3663\)

\(cd+100.ab-ab=3663\)

\(cd+99.ab=3663\)

\(\Rightarrow cd=99.\left(37-ab\right)\)

\(\Rightarrow37-ab=0\) hoặc \(37-ab=1\)

Nếu 37 - ab = 0 thì ab = 37 và cd = 00

Nếu 37 - ab = 1 thì ab=36 và cd = 99

Vậy số cần tìm là: 3700 và 3699

10 tháng 6 2015

Gọi số cần tìm là abcd. Xóa đi chữ số hàng chục và đơn vị ta được số ab

Ta có :

abcd - ab = 3663

ab x100 + cd -ab = 3663

cd + ab x100 - ab = 3663

cd + ab x 99         = 3663

             cd           = 3663 - ab x99

             cd           = 37 x 99 - ab x 99

             cd           = (37- ab) x 99

Nhận xét : Tích của 99 với 1 số tự nhiên là một số bé hơn 100 nên 37 - ab phải = 0 hoặc1

Nếu 37 - ab = 0 thì ab = 37 và cd = 00

Nếu 37 - ab = 1 thì ab  = 36 và cd = 99

Vậy số cần tìm là 3700 hoặc 3699

3700 hoac 3699 ban a

6 tháng 7 2019

Trả lời

Số tự nhiên cần tìm thỏa mãn yêu cầu đề bàu là:

     3700. Vì 3700 bỏ chữ số hàng chục và hàng đơn vị thì ta được số mới là 37.

Và: 3700-37=3663.

Vậy thì 37 nhỏ hơn 3700 là 3663 đơn vị.

24 tháng 7 2016

đáp án : 3700 , 3699

24 tháng 7 2016

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789

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758645

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gggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg

fd

fg

g

g

g

g

g

g

g

g

g

g

g

g

g

yh

u

yt

tu

yt

eawr

we

r

tt

ryh

fyu

gfykhj

k

j

lhj

gi8

et

e

rsdth

dfyg

hndf

jfh

frghy

fg

h

f

j

fh

f

g

d

gf

h

fh

dhfg

dfhf

tr;dg

dg

g

fh

g

hg

g

gh

gg

h

hg

hg

h

t

t

t

t

t

sd

d

xdf

ghf

j

ghu

i

tfr

cxf

j

udse5ytr

77es

5

65

6

t

frf

g

c

g

tr

yt

f

v

g

v

tf

,

tfv

j

f

b

t

b

hy

n

gh

g

g

g

g

gf

41

4

4

2

42

24

24

24

24

24

2

5

2

24

44

2

45

452

2

12

2

2

22

4

1

24

4

4

5

42

4

14

2

42

24

25

4

4

44

5

tyhyf

tghy

f

h

fgh

dg

hg

fj

gh

k

jj

j

j

j

j

j

j

j

j

j

j

j

j

j

j

j

j

j

j

j

j

26 tháng 6 2017

Gọi số đó là abcd ta có

abcd-ab=3630

(ab x 100+cd)-ab=3630

ab x 99+cd=3630

=>ab=36    cd=66

Số có 4 chữ số đó là 3666