Question

what 5 digit number has the following features "if we put the numeral 1 at the beginning, we get a number three times smaller than .if we put the numeral 1 at the end of the number

Answer 1

5

Q:

What 5 - digit number has the following features : 

Additional Details

If we put the numeral 1 at the beginning, we get a number three times smaller than if we put the numeral 1 at the end of the number?
 

Answer:

Let the 5 digit number be represented by abcde.

Then the 6 digit number, 1abcde x 3 = abcde1 (another 6 digit number)

Now let Y = abcde

Then (100000 + Y) x 3 = (Y x 10) + 1

300000 + 3Y = 10Y + 1

7Y = 299999

Y = 299999 ÷ 7 = 42857

Answer 2

Step-by-step explanation:

42857

428571

142857 × 3 = 428571