What Comes Next in the Seque...
What Comes Next in the Sequence: 6, 15, 105, 5460, ??Correct answers: 47
The first user who solved this task is Neelima Subrahmanyam.
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MelodeonIn 1849, the melodeon was granted a patent to C. Austin of Concord, N.H. (U.S. No. 6,543). This was a small reed organ, with treadle-operated bellows to draw air through the reeds. |