Given the series: $7, 8, 9, 7, 6, 5, 3, 4, 2, 8, 9, 7, 2, 4, 5, 9, 2, 9, 7, 6, 4, 7$. Which numbers have equal frequency?

Ashish leaves his house at $20 \text{ minutes}$ to seven in the morning,reaches Kunal's house in $25 \text{ minutes}$,they finish their breakfast in another $15 \text{ minutes}$ and leave for their office which takes another $35 \text{ minutes}$. At what time do they leave Kunal's house to reach their office?

$M$ is older than $R$. $Q$ is younger than $R$ and $N$. $N$ is not as old as $M$. Who among $M, N, R$,and $Q$ is the oldest?

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 $^{th}$)?

If the third day of a month is Monday,which of the following will be the fifth day from $21^{st}$ of the month?

In a queue,Amrita is $10^{th}$ from the front while Mukul is $25^{th}$ from behind and Mamta is just in the middle of the two. If there are $50$ persons in the queue,what position does Mamta occupy from the front (in $^{th}$)?