Question

Melanie is thinking of a four-digit number.
The digit in the thousands place is double
the digit in the hundreds place. The digit in
the hundreds place is double the digits in
the tens place. The digit in the tens place
is double the digit in the ones place. There
is a 1 in the ones place. What is
the number?

Answer 1

8421

Answer 2

Reverse engineering is how you do it.

Answer 3

thk you mathsolver ur lifesaver

Answer 4

say the number is (abcd) where a is the digit in the thousands place,b is the hudreds place, c is the tens place and d is the ones place. according to you d=1,c=2*d=2,b=2*c=2*2=4,a=2*b=2*4=8,,,,,,hence the number is 8421...hope this helps