Ravi is $7$ ranks ahead of Sumit in a class of $39$ students. If Sumit's rank is $17^{th}$ from the last, what is Ravi's rank from the start (in $^{th}$)?

If $16 \times 85 = 8651$,what is $73 \times 42$?

Five boys took part in a race. Prabir finished before Mohit but behind Mihir. Suresh finished before Sanchit but behind Mohit. Who won the race?

The train for Lucknow leaves every two and a half hours from New Delhi Railway Station. An announcement was made at the station that the train for Lucknow had left $40 \,minutes$ ago and the next train will leave at $18:00 \,hrs.$ At what time was the announcement made?

How many numbers from $11$ to $50$ are there which are exactly divisible by $7$ but not by $3$?

Mohan is older than Prabir,Suresh is younger than Prabir. Mihir is older than Suresh but younger than Prabir. Who among the four is the youngest?