Arithmetical Aptitude

This chapter sheds light on the concept of interest, discount, H.C.F. and L.C.M. It gives information about ratio, the proportion with profit and loss. It also includes the problems related to age with the concept of clock and calendar.

This chapter deals with the concept of mensuration by finding the areas and perimeters of plane figures. It highlights areas of minor and major segments, along with the units of volume and surface area.