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Enter the mathematical formula directly and click the "Next" button to get the calculation answer.
It supports mathematical functions (including trigonometric functions).
Current location：Mathematical operation > History of Mathematical Computation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 arithmetic calculations
[1/1 Formula]
Work: Calculate the value of equation (A(9,9)+A(9,8)+A(9,7)+A(9,6)+A(9,5)+A(9,4)) .
Question type: Mathematical calculation
Solution:
(A(9,9)+A(9,8)+A(9,7)+A(9,6)+A(9,5)+A(9,4))
=(362880+A(9,8)+A(9,7)+A(9,6)+A(9,5)+A(9,4))
=(362880+362880+A(9,7)+A(9,6)+A(9,5)+A(9,4))
=(362880+362880+181440+A(9,6)+A(9,5)+A(9,4))
=(362880+362880+181440+60480+A(9,5)+A(9,4))
=(362880+362880+181440+60480+15120+A(9,4))
=(362880+362880+181440+60480+15120+3024)
=985824
Answer:(A(9,9)+A(9,8)+A(9,7)+A(9,6)+A(9,5)+A(9,4))=985824