21.   The quandary is prompting a small but growing number of Muslims across the country who want Muslim scholars to permit mathematical calculations to designate a time for Eid.

22.   The timer registers the seconds that the athlete is airborne, and the inventors say they can use a mathematical calculation to translate that time into a height measurement.

23.   These are the Clydesdales of computing, workhorse chips used for a vast variety of tasks, many of them having little to do with mathematical calculation.

24.   These devices looked like rulers and were used to do complex mathematical calculations.

25.   Using mathematical calculations, Gravenstine devised a way to use the device to measure the height of buildings.

26.   Also present were experts on mathematical calculations and sightings of the new moon, known as hisab and rukyat hilal.

27.   Opposing arguments get tied up in mathematical calculations.

28.   The new month is usually determined by the sighting of the moon which is due to take place, based on mathematical calculations, either today or tomorrow.

29.   Where recalcitrance lies - against that of professed reason and the morality of global citizenship - would appear to be clear on mathematical calculations considered in isolation.

30.   Intel said it was aware of a World Wide Web site indicating potential flaws in certain mathematical calculations.