5. Evaluate the combinations (a) and (b) using two methods: (i) Using Pascal's Triangle; (ii) Using the formula. a) b) 1 N 1 3 3 1 1 6 1 5 10 10 S 6 15 20 15 21 35 35 21 7 1 1 28 56 70 56 28 1 36 B4 126 126 84 36 LO 45 120 210 252 210 120 45 10 11 S5 165 330 462 462 330 165 55 11 12 66 220 495 792 924 792 495 220 66 12 13 78 286 715 1287 1716 1716 1287 715 286 78 13 14 91 364 1001 2002 3003 3432 3003 2002 1001 364 91 14 1 15 105 455 1365 3003 5005 6435 -6435 5005 3003 1365 455 105 15 1 1 16 120 560 1820 4368 8008 11440 12870 11440 8008 4368 1820 560 120 16 1