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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 (C(3,2)*C(40,2)+C(3,3)*C(40,1)+C(3,1)*C(40,3))/C(43,4) .
Question type: Mathematical calculation
Solution:
(C(3,2)*C(40,2)+C(3,3)*C(40,1)+C(3,1)*C(40,3))/C(43,4)
=(3*C(40,2)+C(3,3)*C(40,1)+C(3,1)*C(40,3))/C(43,4)
=(3*780+C(3,3)*C(40,1)+C(3,1)*C(40,3))/C(43,4)
=(3*780+1*C(40,1)+C(3,1)*C(40,3))/C(43,4)
=(3*780+1*40+C(3,1)*C(40,3))/C(43,4)
=(3*780+1*40+3*C(40,3))/C(43,4)
=(3*780+1*40+3*9880)/C(43,4)
=32020/C(43,4)
=32020/123410
=0.25946
Answer:(C(3,2)*C(40,2)+C(3,3)*C(40,1)+C(3,1)*C(40,3))/C(43,4)=0.25946