The statement is: Introductory letter serves purpose of a preface or introduction. It is written like any or business letter.

The statement is true. A formal report must contain rational information. It should be presented in an organised manner.

The main body is heart and soul of report. It has four distinct parts: Introduction, description, conclusion and recommendations.

Interpretative reports do not merely provide data. They assess this data and provide rational findings and worthwhile recommendations.

A letter form of report is used when: The subject matter is brief, reader is a close associate, subject matter pertains to a few topics, etc..

The statement is true. A report may be used for reading or hearing. The language would change in both cases because spoken language is different from written language.

A progress report should contain information like: Name of project, nature of project, extent of work to be completed, amount of work left, etc..

The correct statement is: A summary is 5-10 percent of original report. A summary becomes crucial when report is long and gives substance of report.

A technical report must always be objective. There is very little place for subjective evaluation in a report. A technical report establishes a logical conclusion.

A report can be divided into three parts: front matter, front cover and title page.