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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(4,2)*C(38,2)+C(4,3)*C(38,1)+C(4,1)*C(38,3)*1)/C(42,3) .
Question type: Mathematical calculation
Solution:
(C(4,2)*C(38,2)+C(4,3)*C(38,1)+C(4,1)*C(38,3)*1)/C(42,3)
=(6*C(38,2)+C(4,3)*C(38,1)+C(4,1)*C(38,3)*1)/C(42,3)
=(6*703+C(4,3)*C(38,1)+C(4,1)*C(38,3)*1)/C(42,3)
=(6*703+4*C(38,1)+C(4,1)*C(38,3)*1)/C(42,3)
=(6*703+4*38+C(4,1)*C(38,3)*1)/C(42,3)
=(6*703+4*38+4*C(38,3)*1)/C(42,3)
=(6*703+4*38+4*8436*1)/C(42,3)
=38114/C(42,3)
=38114/11480
=3.320035
Answer:(C(4,2)*C(38,2)+C(4,3)*C(38,1)+C(4,1)*C(38,3)*1)/C(42,3)=3.320035