$A, B, C, D,$ and $E$ are five persons standing in a bus queue. $A$ is a teacher standing to the right of $D$,who is an advocate. $B$ is a scientist and is standing to the left of $E$,who is an electrician. There are two persons between $B$ and $A$. $C$,who is a banker,stands to the right of $A$. Who is in the middle?

There are five different houses,$A$ to $E$,in a row. $A$ is to the right of $B$,and $E$ is to the left of $C$ and right of $A$. $B$ is to the right of $D$. Which of the houses is in the middle?

$(i)$ Eight persons $E, F, G, H, I, J, K$ and $L$ are seated around a square table,two on each side.
$(ii)$ There are three lady members and they are not seated next to each other.
$(iii)$ $J$ is between $L$ and $F$.
$(iv)$ $G$ is between $I$ and $F$.
$(v)$ $H$,a lady member,is second to the left of $J$.
$(vi)$ $F$,a male member,is seated opposite $E$,a lady member.
$(vii)$ There is a lady member between $F$ and $I$.
Who among the following is to the immediate left of $F$?

Ravi is not wearing white and Ajay is not wearing blue. Ravi and Sohan wear different colours. Sachin alone wears red. What is Sohan's colour,if all four of them are wearing different colours?

There are five friends $-$ $Sachin$,$Kunal$,$Mohit$,$Anuj$ and $Rohan$.
$Sachin$ is shorter than $Kunal$ but taller than $Rohan$.
$Mohit$ is the tallest.
$Anuj$ is a little shorter than $Kunal$ and a little taller than $Sachin$.
Who is the second tallest?

Prashant Arora has three children $-$ Sangeeta,Vimal,and Ashish. Ashish married Monika,the eldest daughter of Mr. and Mrs. Roy. The Roys married their youngest daughter to the eldest son of Mr. and Mrs. Sharma,and they had two children named Amit and Shashi. The Roys have two more children,Roshan and Vandana,both elder to Veena. Sameer and Ajay are sons of Ashish and Monika. Rashmi is the daughter of Amit.
What is the surname of Sameer?