Harold buys a number of calculators for a total of R2 000. He gives 3 of these calculators to needy learners and sells all the remaining calculators for a total of R1 750. He sold each calculator for R50 more than he originally paid. How many calculators did he originally buy?​

Def is a scalene triangle

The major difference is that a histogram is only used to plot the frequency of score occurrences in a continuous data set that has been divided into classes, called bins.  bar charts, on the other hand, can be used for a great deal of other types ofvariables  including  ordinal  andnominal  data sets.