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 shortest?

$(i)$ Eleven students,$A, B, C, D, E, F, G, H, I, J$ and $K$ are sitting in the first row of the class facing the teacher.
$(ii)$ $D$,who is to the immediate left of $F$,is second to the right of $C$.
$(iii)$ $A$ is second to the right of $E$,who is at one of the ends.
$(iv)$ $J$ is the immediate neighbour of $A$ and $B$ and third to the left of $G$.
$(v)$ $H$ is to the immediate left of $D$ and third to the right of $I$.
Which of the following statements is true in the context of the above sitting arrangements?

Given the following information:
$(A)$ Gopal is shorter than Ashok but taller than Kunal;
$(B)$ Navin is shorter than Kunal;
$(C)$ Jayesh is taller than Navin;
$(D)$ Ashok is taller than Jayesh.
Which of the given statements is not necessary to determine the relative heights of all individuals?

Six friends $A, B, C, D, E$ and $F$ are sitting in a closed circle facing the centre. $A$ is facing $D$. $C$ is between $A$ and $B$. $F$ is between $E$ and $A$. Who is to the immediate left of $B$?

In a group of six women,there are four dancers,four vocal musicians,one actress and three violinists. Girija and Vanaja are among the violinists while Jalaja and Shailja do not know how to play on the violin. Shailja and Tanuja are among the dancers. Jalaja,Vanaja,Shailja and Tanuja are all vocal musicians and two of them are also violinists. If Pooja is an actress,who among the following is both a dancer and a violinist?

Rohit,Kunal,Ashish,and John are students of a school. Three of them stay far from the school and one near it. Two study in class $IV$,one in class $V$,and one in class $VI$. They study Hindi,Mathematics,Social Science,and Science. One is good at all the four subjects while another is weak in all of these. Rohit stays far from the school and is good at Mathematics only,while Kunal is weak in Mathematics only and stays close to the school. Neither of these two nor Ashish studies in class $VI$. One who is good at all the subjects studies in class $V$. Which two boys are good at Mathematics?