  | 
      
       
		
 Do this and answer the question which is larger, the binomial coefficient 
C(15,5) or C(14,6)? 
Solution:
Strangely enough they are the same. 
 
|  
 =-2 
 | 
 
 =A1+1 
 | 
 
 =B1+1 
 | 
 
 =C1+1 
 | 
 
 =D1+1 
 | 
 
 =E1+1 
 | 
 
 =F1+1 
 | 
 
 =G1+1 
 | 
 
 
|  
 =A1+1 
 | 
 
 1 
 | 
   | 
   | 
   | 
   | 
   | 
   | 
 
 
|  
 =A2+1 
 | 
   | 
 
 =C2+B2 
 | 
 
 =D2+C2 
 | 
 
 =E2+D2 
 | 
 
 =F2+E2 
 | 
 
 =G2+F2 
 | 
 
 =H2+G2 
 | 
 
 
|  
 =A3+1 
 | 
   | 
 
 =C3+B3 
 | 
 
 =D3+C3 
 | 
 
 =E3+D3 
 | 
 
 =F3+E3 
 | 
 
 =G3+F3 
 | 
 
 =H3+G3 
 | 
 
 
|  
 =A4+1 
 | 
   | 
 
 =C4+B4 
 | 
 
 =D4+C4 
 | 
 
 =E4+D4 
 | 
 
 =F4+E4 
 | 
 
 =G4+F4 
 | 
 
 =H4+G4 
 | 
 
 
|  
 =A5+1 
 | 
   | 
 
 =C5+B5 
 | 
 
 =D5+C5 
 | 
 
 =E5+D5 
 | 
 
 =F5+E5 
 | 
 
 =G5+F5 
 | 
 
 =H5+G5 
 | 
 
 
|  
 =A6+1 
 | 
   | 
 
 =C6+B6 
 | 
 
 =D6+C6 
 | 
 
 =E6+D6 
 | 
 
 =F6+E6 
 | 
 
 =G6+F6 
 | 
 
 =H6+G6 
 | 
 
 
|  
 =A7+1 
 | 
   | 
 
 =C7+B7 
 | 
 
 =D7+C7 
 | 
 
 =E7+D7 
 | 
 
 =F7+E7 
 | 
 
 =G7+F7 
 | 
 
 =H7+G7 
 | 
 
 
|  
 =A8+1 
 | 
   | 
 
 =C8+B8 
 | 
 
 =D8+C8 
 | 
 
 =E8+D8 
 | 
 
 =F8+E8 
 | 
 
 =G8+F8 
 | 
 
 =H8+G8 
 | 
 
 
|  
 =A9+1 
 | 
   | 
 
 =C9+B9 
 | 
 
 =D9+C9 
 | 
 
 =E9+D9 
 | 
 
 =F9+E9 
 | 
 
 =G9+F9 
 | 
 
 =H9+G9 
 | 
 
 
|  
 =A10+1 
 | 
   | 
 
 =C10+B10 
 | 
 
 =D10+C10 
 | 
 
 =E10+D10 
 | 
 
 =F10+E10 
 | 
 
 =G10+F10 
 | 
 
 =H10+G10 
 | 
 
 
|  
 =A11+1 
 | 
   | 
 
 =C11+B11 
 | 
 
 =D11+C11 
 | 
 
 =E11+D11 
 | 
 
 =F11+E11 
 | 
 
 =G11+F11 
 | 
 
 =H11+G11 
 | 
 
 
|  
 =A12+1 
 | 
   | 
 
 =C12+B12 
 | 
 
 =D12+C12 
 | 
 
 =E12+D12 
 | 
 
 =F12+E12 
 | 
 
 =G12+F12 
 | 
 
 =H12+G12 
 | 
 
 
|  
 =A13+1 
 | 
   | 
 
 =C13+B13 
 | 
 
 =D13+C13 
 | 
 
 =E13+D13 
 | 
 
 =F13+E13 
 | 
 
 =G13+F13 
 | 
 
 =H13+G13 
 | 
 
 
|  
 =A14+1 
 | 
   | 
 
 =C14+B14 
 | 
 
 =D14+C14 
 | 
 
 =E14+D14 
 | 
 
 =F14+E14 
 | 
 
 =G14+F14 
 | 
 
 =H14+G14 
 | 
 
 
|  
 =A15+1 
 | 
   | 
 
 =C15+B15 
 | 
 
 =D15+C15 
 | 
 
 =E15+D15 
 | 
 
 =F15+E15 
 | 
 
 =G15+F15 
 | 
 
 =H15+G15 
 | 
 
 
|  
 =A16+1 
 | 
   | 
 
 =C16+B16 
 | 
 
 =D16+C16 
 | 
 
 =E16+D16 
 | 
 
 =F16+E16 
 | 
 
 =G16+F16 
 | 
 
 =H16+G16 
 | 
 
 
|  
 -2 
 | 
 
 -1 
 | 
 
 0 
 | 
 
 1 
 | 
 
 2 
 | 
 
 3 
 | 
 
 4 
 | 
 
 5 
 | 
 
 6 
 | 
 
 7 
 | 
   | 
 
 
|  
 -1 
 | 
 
 1 
 | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
 
 
|  
 0 
 | 
   | 
 
 1 
 | 
 
 0 
 | 
 
 0 
 | 
 
 0 
 | 
 
 0 
 | 
 
 0 
 | 
 
 0 
 | 
 
 0 
 | 
   | 
 
 
|  
 1 
 | 
   | 
 
 1 
 | 
 
 1 
 | 
 
 0 
 | 
 
 0 
 | 
 
 0 
 | 
 
 0 
 | 
 
 0 
 | 
 
 0 
 | 
   | 
 
 
|  
 2 
 | 
   | 
 
 1 
 | 
 
 2 
 | 
 
 1 
 | 
 
 0 
 | 
 
 0 
 | 
 
 0 
 | 
 
 0 
 | 
 
 0 
 | 
   | 
 
 
|  
 3 
 | 
   | 
 
 1 
 | 
 
 3 
 | 
 
 3 
 | 
 
 1 
 | 
 
 0 
 | 
 
 0 
 | 
 
 0 
 | 
 
 0 
 | 
   | 
 
 
|  
 4 
 | 
   | 
 
 1 
 | 
 
 4 
 | 
 
 6 
 | 
 
 4 
 | 
 
 1 
 | 
 
 0 
 | 
 
 0 
 | 
 
 0 
 | 
   | 
 
 
|  
 5 
 | 
   | 
 
 1 
 | 
 
 5 
 | 
 
 10 
 | 
 
 10 
 | 
 
 5 
 | 
 
 1 
 | 
 
 0 
 | 
 
 0 
 | 
   | 
 
 
|  
 6 
 | 
   | 
 
 1 
 | 
 
 6 
 | 
 
 15 
 | 
 
 20 
 | 
 
 15 
 | 
 
 6 
 | 
 
 1 
 | 
 
 0 
 | 
   | 
 
 
|  
 7 
 | 
   | 
 
 1 
 | 
 
 7 
 | 
 
 21 
 | 
 
 35 
 | 
 
 35 
 | 
 
 21 
 | 
 
 7 
 | 
 
 1 
 | 
   | 
 
 
|  
 8 
 | 
   | 
 
 1 
 | 
 
 8 
 | 
 
 28 
 | 
 
 56 
 | 
 
 70 
 | 
 
 56 
 | 
 
 28 
 | 
 
 8 
 | 
   | 
 
 
|  
 9 
 | 
   | 
 
 1 
 | 
 
 9 
 | 
 
 36 
 | 
 
 84 
 | 
 
 126 
 | 
 
 126 
 | 
 
 84 
 | 
 
 36 
 | 
   | 
 
 
|  
 10 
 | 
   | 
 
 1 
 | 
 
 10 
 | 
 
 45 
 | 
 
 120 
 | 
 
 210 
 | 
 
 252 
 | 
 
 210 
 | 
 
 120 
 | 
   | 
 
 
|  
 11 
 | 
   | 
 
 1 
 | 
 
 11 
 | 
 
 55 
 | 
 
 165 
 | 
 
 330 
 | 
 
 462 
 | 
 
 462 
 | 
 
 330 
 | 
   | 
 
 
|  
 12 
 | 
   | 
 
 1 
 | 
 
 12 
 | 
 
 66 
 | 
 
 220 
 | 
 
 495 
 | 
 
 792 
 | 
 
 924 
 | 
 
 792 
 | 
   | 
 
 
|  
 13 
 | 
   | 
 
 1 
 | 
 
 13 
 | 
 
 78 
 | 
 
 286 
 | 
 
 715 
 | 
 
 1287 
 | 
 
 1716 
 | 
 
 1716 
 | 
   | 
 
 
|  
 14 
 | 
   | 
 
 1 
 | 
 
 14 
 | 
 
 91 
 | 
 
 364 
 | 
 
 1001 
 | 
 
 2002 
 | 
 
 3003 
 | 
 
 3432 
 | 
   | 
 
 
|  
 15 
 | 
   | 
 
 1 
 | 
 
 15 
 | 
 
 105 
 | 
 
 455 
 | 
 
 1365 
 | 
 
 3003 
 | 
 
 5005 
 | 
 
 6435 
 | 
   | 
 
 
|  
 16 
 | 
   | 
 
 1 
 | 
 
 16 
 | 
 
 120 
 | 
 
 560 
 | 
 
 1820 
 | 
 
 4368 
 | 
 
 8008 
 | 
 
 11440 
 | 
   | 
 
 
|  
 17 
 | 
   | 
 
 1 
 | 
 
 17 
 | 
 
 136 
 | 
 
 680 
 | 
 
 2380 
 | 
 
 6188 
 | 
 
 12376 
 | 
 
 19448 
 | 
   | 
 
 
|  
 18 
 | 
   | 
 
 1 
 | 
 
 18 
 | 
 
 153 
 | 
 
 816 
 | 
 
 3060 
 | 
 
 8568 
 | 
 
 18564 
 | 
 
 31824 
 | 
   | 
 
 
|  
 19 
 | 
   | 
 
 1 
 | 
 
 19 
 | 
 
 171 
 | 
 
 969 
 | 
 
 3876 
 | 
 
 11628 
 | 
 
 27132 
 | 
 
 50388 
 | 
   | 
 
 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
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