For the following questions answer them individually
Perfect square numbers ending with '1' will have their square roots ending in ............
The variance of 5 values is 16. If each value is doubled, find the standard deviation of the new value.
A motorcyclist covers a distance of 192 km at a speed of 32 km/h. A car starts from the same place as the motorcyclist 2.5 hours later, but covers the same distance 0.5 hour earlier. What is the ratio of the speed of the car and the motorcycle?
In a certain code, 'gri chri' means 'brand new', 'gyp twoh' means 'very old', 'gri bur twoh' means 'old and new' and 'chri deh twoh' means 'old brand car'. Which of the following codes denotes 'new car'?
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