Posted by Nicholas on Monday, September 7, 2009 at 8:40pm.
Let the fourth digit be x
First digit = 2x
Second digit = 2(2x) = 4x
Third digit = x/2
Thus x+2x+4x+x/2 = 15
15x/2=15
x=2
Thus the number is (2*2)(4*2)(2/2)(2)
= 4812
a four digit number equals the sum of twice of its reversed and half of it. also its first digit is 4 times the last digit and second digits is 7 times the 3rd digit .the sum of four digits of the number is ?
I am a four digit number with 6 hundreds and 5 ones .the sum of all my digits is 15 what am I.
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