There is a 4 digit no. in which 3rd digit is twice of first one. Second digit is the sum of first and third. Fourth digit is twice of third. What is the no?  Choose the correct option.
A) 1224	B) 1324	C) 1444	D) 1524	E) 1354
Let the 4-digit no. be "abcd"   c = 2*a   b=a+c   d = 2*c =&gt; d=4a   abcd =&gt; (a)(a+c)(2a)(4a)   Possible values of a ll be 1 nd 2... Bcozzz a&gt;2 implies d&gt;10....Digits should ranges between 0 nd 9...   If a=1, then c=2,d=4, b=3... The no. is 1324   If a=2, then c=4,d=8, b=6... The no. is 2648   Ans : 1324 (or) 2648   ANSWER:1324
<result>B</result>
There is a 4 digit no. in which 3rd digit is twice of first one. Second digit is the sum of first and third. Fourth digit is twice of third. What is the no?