There is a five-digit number. The fifth digit is one fourth of the third digit and one half of the fourth digit. Third digit is one half of the first digit. Second digit is 5 more than the fifth digit. What is that 5-digit number?	Choose the correct choice from the following choices:
A) 86421	B) 86424	C) 89421	D) 96421	E) 76421
we can prove it as follows   suppose number is pqrst, now   t=(1/4)r=(1/2)s......(1),r=(1/2)p.....(2),q=t+5....(3)   now from (1)4t=r=2s=k(suppose)....(4)   from (2) 2r=p...(5)   now(4)*2 then we get 8t=2r=4s=k(again some integer)....(6)   from (5) and (6)   8t=2r=4s=p=k.........(7)   now we have to choose the value of k   1)if choose k=0 then it is worthless number will be 00000(not a answer)   2)for k=1 to 7 and for k=9 digits will be in fractions   3)for k=8 we get p=8,s=2,r=4,t=1 and q=6   and number is pqrst=86421   86421NSWER:86421
<result>A</result>
There is a five-digit number. The fifth digit is one fourth of the third digit and one half of the fourth digit. Third digit is one half of the first digit. Second digit is 5 more than the fifth digit. What is that 5-digit number?