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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(4,1)*C(39,3)+C(4,1)*C(38,2)*0+C(4,3)*C(38,0)*0)/C(42,3) .
Question type: Mathematical calculation
Solution:
(C(4,1)*C(39,3)+C(4,1)*C(38,2)*0+C(4,3)*C(38,0)*0)/C(42,3)
=(4*C(39,3)+C(4,1)*C(38,2)*0+C(4,3)*C(38,0)*0)/C(42,3)
=(4*9139+C(4,1)*C(38,2)*0+C(4,3)*C(38,0)*0)/C(42,3)
=(4*9139+4*C(38,2)*0+C(4,3)*C(38,0)*0)/C(42,3)
=(4*9139+4*703*0+C(4,3)*C(38,0)*0)/C(42,3)
=(4*9139+4*703*0+4*C(38,0)*0)/C(42,3)
=(4*9139+4*703*0+4*1*0)/C(42,3)
=36556/C(42,3)
=36556/11480
=3.184321
Answer:(C(4,1)*C(39,3)+C(4,1)*C(38,2)*0+C(4,3)*C(38,0)*0)/C(42,3)=3.184321