Satish remembers that his brother's birthday is after $15^{th}$ but before $18^{th}$ of February,whereas his sister Kajal remembers that her brother's birthday is after $16^{th}$ but before $19^{th}$ of February. On which day in February is Satish's brother's birthday (in $^{th}$)?

Among six members $P, Q, R, G, S$ and $M$ sitting around a circle facing the centre,$(i)$ $R$ is between $G$ and $P$,$(ii)$ $M$ is between $P$ and $S$. What is the position of $Q$?

How many numbers from $1$ to $100$ are there,each of which is not only exactly divisible by $4$ but also has $4$ as a digit?

If $3^{rd}$ December,$1990$ is Sunday,what day is $3^{rd}$ January,$1991$?

How many numbers from $1$ to $100$ are there,each of which is not only exactly divisible by $4$ but also has $4$ as a digit?

There are $20$ people working in an office. The first group of $5$ works between $8:00 \,A.M.$ and $2:00 \,P.M.$ The second group of $10$ works between $10:00 \,A.M.$ and $4:00 \,P.M.$ And the third group of $5$ works between $12$ noon and $6:00 \,P.M.$ There are $3$ computers in the office which all the employees frequently use. During which of the following hours are the computers likely to be used most?