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justapistachio

justapistachio

Well-known member
kaiyaaa_
kaiyaaa_
some help me with hw pls im so dumb and i don't wanna ask my mom she kinda scary??

Question:
I am a number between 7,000,000 and 8,000,000.
All my digits are odd.
All the digits in my thousand period are the same.
All the digits in my units period(hundreds, tens, ones) are the same.
The sum of the digits is 31.
Give as many answers as you can.
What strategies did you use to find the mystery number?
 
Because it’s a number from 7m to 8m, the number is 7,???,???
Because the digit sum up to 31,
We subtract 7 from 31

31 - 7 = 24

all the thousands place and units period are the same
7, xxx, yyy

3x + 3y = 24
[simplify]
x + y = 8

therefore,
y = 8 - x
0 < x < 8
{ y cannot be 0 as it is not an odd number. Therefore, x has to be a number between 0 to 8(the sum of x and y is 8), And both numbers have to be odd}

When x = 1,
y = 8 - 1
y = 7

7,111,777

When x = 3,
y = 5

7,333,555

etc.

7,555,333
7,777,111
 
Last edited:
JustAPistachio said:
some help me with hw pls im so dumb and i don't wanna ask my mom she kinda scary??

Question:
I am a number between 7,000,000 and 8,000,000.
All my digits are odd.
All the digits in my thousand period are the same.
All the digits in my units period(hundreds, tens, ones) are the same.
The sum of the digits is 31.
Give as many answers as you can.
What strategies did you use to find the mystery number?
Click to expand...
I. Hate. Maths.
 
JustAPistachio said:
some help me with hw pls im so dumb and i don't wanna ask my mom she kinda scary??

Question:
I am a number between 7,000,000 and 8,000,000.
All my digits are odd.
All the digits in my thousand period are the same.
All the digits in my units period(hundreds, tens, ones) are the same.
The sum of the digits is 31.
Give as many answers as you can.
What strategies did you use to find the mystery number?
Click to expand...
theres an app called brainly and u can just use ur camera and show it the work and it will give u the answers..
 
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