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  2. Arab tone system - Wikipedia

    en.wikipedia.org/wiki/Arab_tone_system

    The current tone system is derived from the work of Farabi (d. 950 CE) (heptatonic scales constructed from seconds), who used a 25-tone unequal scale (see tetrachord), and Mikha'il Mishaqah (1800–1888) who first presented the 24-tone equal-tempered division. [6]

  3. Bangladeshi taka - Wikipedia

    en.wikipedia.org/wiki/Bangladeshi_taka

    During 1976 a completely new series of notes was introduced, with the exception of the 1-taka note, which was released as the second variety of the third issue during 1976. The notes of this issue are notable for the absence of the portrait of Sheikh Mujib, whose portrait had dominated all issues of the Bangladesh Bank until this issue.

  4. Bangladeshi One Taka Coin - Wikipedia

    en.wikipedia.org/wiki/Bangladeshi_One_Taka_Coin

    The official currency was named Taka, later "৳" was designated as the symbol of Taka. The minimum unit of money fixed is one taka. And a percentage of money is called Paisa. That is, ৳1 is equal to 100 paisa. In 1973, 5 paisa, 10 paisa, 25 paisa and 50 paisa were introduced. [2] [3]

  5. Bangladeshi 5 Taka Coin - Wikipedia

    en.wikipedia.org/wiki/Bangladeshi_5_Taka_Coin

    The first Rs 5 note was issued on 4 March 1972. On October 1, 1993, 5 Taka coins were issued. The obverse of the design of this coin had the national symbol of Bangladesh. At the center of the National Emblem of Bangladesh is a lotus flower floating in water, surrounded by two grains of rice.

  6. Category:Note values - Wikipedia

    en.wikipedia.org/wiki/Category:Note_values

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  7. Note value - Wikipedia

    en.wikipedia.org/wiki/Note_value

    Note Rest American name British name Relative value Dotted value Double dotted value Triple dotted value; large, duplex longa, or maxima [1] [2] (occasionally octuple note, [3] octuple whole note, [4] or octuple entire musical note) [5]

  8. Time-based currency - Wikipedia

    en.wikipedia.org/wiki/Time-based_currency

    Professionals were entitled to charge multiple HOURS per hour, but often reduced their rate in the spirit of equity. Millions of dollars' worth of HOURS were traded among thousands of residents and 500 businesses. Interest-free HOUR loans were made, and HOUR grants given to over 100 community organizations. [27]

  9. Metric time - Wikipedia

    en.wikipedia.org/wiki/Metric_time

    1.67 minutes (or 1 minute 40 seconds) 10 3: kilosecond: 1 000: 16.7 minutes (or 16 minutes and 40 seconds) 10 6: megasecond: 1 000 000: 11.6 days (or 11 days, 13 hours, 46 minutes and 40 seconds) 10 9: gigasecond: 1 000 000 000: 31.7 years (or 31 years, 252 days, 1 hour, 46 minutes, 40 seconds, assuming that there are 7 leap years in the interval)