Chhaya simplified the given rational number $\frac{ - 25}{ - 30} = - \frac{5}{6}$ This error can be considered as 

• procedural error

• error due to wrong interpretation of problem

• careless error

• conceptual error

Read the following problem given in a textbook for class VIL "A map is given with a scale of 2 cm = 1000 km. What is the actual distance between two places (in km), if the distance on the map is 2.5 cm?" This problem is

• based on higher order thinking skills

• to enhance problem solving skills

• interdisciplinary in nature

• investigatory in nature

Which one of the following is not a Mathematical process?

• Memorisation

• Measurement

• Visualisation

• Estimation