$$ {23 ^2 + \sqrt{x}=625}$$
The value of x in the given equation$$ {23 ^2 + \sqrt{x}=625}$$
A clock only with only dots marking 3, 6, 9 and 12 positions has been kept upside down in front of mirror. A person reads the time in the reflection of the clock as 4.50. What is the actual time?
A train moving at speed of 90 km/hr crosses a pole in 7 seconds. Find the length of the train.