The Average function can only be used with Currency, Decimal and Number data types

Which of the following data structures facilitate high-speed searching and sorting and efficient elimination of data items?

a) stacks. b) queues. c) binary trees. d) Both b and c.

____ are the ones that essentially do the hands-on management and operational work in a specific situation.

A. Functional roles B. Executive roles C. Corollary roles D. Management roles