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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(9,4)+A(9,5)+A(9,6)+A(9,7)+A(9,8)+A(9,9) .
Question type: Mathematical calculation
Solution:
A(9,4)+A(9,5)+A(9,6)+A(9,7)+A(9,8)+A(9,9)
=3024+A(9,5)+A(9,6)+A(9,7)+A(9,8)+A(9,9)
=3024+15120+A(9,6)+A(9,7)+A(9,8)+A(9,9)
=3024+15120+60480+A(9,7)+A(9,8)+A(9,9)
=3024+15120+60480+181440+A(9,8)+A(9,9)
=3024+15120+60480+181440+362880+A(9,9)
=3024+15120+60480+181440+362880+362880
=18144+60480+181440+362880+362880
=78624+181440+362880+362880
=260064+362880+362880
=622944+362880
=985824
Answer:A(9,4)+A(9,5)+A(9,6)+A(9,7)+A(9,8)+A(9,9)=985824