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Johann Regiomontanus first introduced the plus sign, + , in this year.

Question 1:

Johann Regiomontanus first introduced the plus sign, + , in this year.

A. 1656

B. 1556

C. 1456

D. 1756

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Trivial Practice Quiz science-technology - Test 25 | Englishfreetest.com

30 minutes
15 questions