Given below are some of the rules enforced by the on-screen calculator supplied during a GRE exam. GRE Calculator here follows these same rules, giving students a more realistic practice experience:
1) No exponent notations are used or allowed.
2) Use of parenthesis is allowed only to a single degree (i.e. nested parenthesis isn't allowed).
3) Any number with an absolute value larger than 99,999,999 is not displayed, and instead the phrase "Error" is displayed.
4) At any time, no more than 8 digits are shown on the screen. Rounding off is used where needed to meet this requirement.
5) Any computation performed that is mathematically undefined, results in the "Error" message being displayed.
6) The only memory functions allowed are MR, M+ and MC.
7) Complex numbers aren't allowed.
8) Mathematical 'order of operations' is enforced. For example, if calculating 8 + 5 x 3 from left to right, the answer would be 23, not 39.
GRE Calculator also offers a style called 'GRE Exam Style', which makes the calculator look strikingly similar to the calculator offered during an actual GRE exam. This offers an even more realistic practice experience for all those using GRE Calculator.
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- Ahmad Najeeb
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