From Wikipedia, the free encyclopedia. Permanent Account Number (PAN) is a code that acts as identification of Indians, especially those who pay Income Tax. It is a unique, 10-character alpha-numeric identifier, issued to all judicial entities identifiable under the Indian Income Tax Act 1961. IT PAN card is issued under Section 139A of the Income Tax Act. 2  The PAN structure is as follows: AAAPL1234C: First five characters are letters, next four numerals, last character letter. 3  The first three letters are sequence of alphabets from AAA to ZZZ. 4  The fourth character informs about the type of holder of the card.
The scientific method is a body of techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge. To be termed scientific, a method of inquiry is commonly based on empirical or measurable evidence subject to specific principles of reasoning.
Science is a broad grouping of disciplines containing many different areas that are all linked together by a single concept: the scientific method. The scientific method represents an investigative method based on observation, deduction, hypothesizing, and experimentation that can be applied to all areas of life.