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.
How is Mrs. Roy related to Ashish?

$1.$ Six friends $A, B, C, D, E$ and $F$ are sitting in a closed circle facing the centre.
$2.$ $E$ is to the left of $D$.
$3.$ $C$ is between $A$ and $B$.
$4.$ $F$ is between $E$ and $A$.
Who is to the left of $B$?

Six students $A, B, C, D, E$ and $F$ are sitting in the field. $A$ and $B$ are from Nehru House while the rest belong to Gandhi House. $D$ and $F$ are tall while the others are short. $A, C$ and $D$ are wearing glasses while the others are not. Which tall student of Gandhi House is not wearing glasses?

$Mr. A, Miss B, Mr. C$ and $Miss D$ are sitting around a table and discussing their trades.
$(1)$ $Mr. A$ sits opposite to the cook.
$(2)$ $Miss B$ sits to the right of the barber.
$(3)$ The washerman is on the left of the tailor.
$(4)$ $Miss D$ sits opposite $Mr. C$.
What are the trades of $A$ and $B$?

In the Olympic Games,the flags of six nations were flown on the masts in the following way:
The flag of America was to the left of the Indian tricolour and to the right of the flag of France. The flag of Australia was on the right of the Indian flag but was to the left of the flag of Japan,which was to the left of the flag of China.
Find the two flags which are in the centre.

$A$ training college has to conduct a refresher course for teachers of seven different subjects: Mechanics,Psychology,Philosophy,Sociology,Economics,Science,and Engineering from $22^{nd}$ July to $29^{th}$ July.
$1$. The course should start with Psychology.
$2$. $23^{rd}$ July,being Sunday,should be a holiday.
$3$. Science subject should be on the previous day of the Engineering subject.
$4$. The course should end with Mechanics.
$5$. Philosophy should be immediately after the holiday.
$6$. There should be a gap of one day between Economics and Engineering.
Which subject will be on Tuesday?