What is the answer to this math riddle?

Jacob

Member
Joined
May 20, 2008
Messages
780
Reaction score
0
Points
16
A 5 digit number where:
1st is double 2nd number
3rd is two less than 2nd
4th number is sum of 2nd and 3rd
Last number is 1 less than 1st
Sum of all digits is 19.
 
2nd digit—x:
2x + x + x - 2 + x + x - 2 + 2x - 1 = 19
8x = 24
x = 3

1st digit:
= 2(3)
= 6

3rd digit:
= 3 - 2
= 1

4th digit:
= 3 + 1
= 4

5th digit:
= 6 - 1
= 5

Answer: 63,145 is the number
 
1st digit is double 2nd digit:
84xxx
63xxx
42xxx
21xxx

3rd is two less than 2nd
842xx
631xx

4th equals the sum of 2nd and 3rd
5th is 1 less than 1st
84267 (sum 27)
63145 (sum 19)
 
Back
Top