The 4 × 3 × 2 × 1 "cancelled out", leaving only 7 × 6 × 5. And: 7 × 6 × 5 = 210. So there are 210 different ways that 7 people could come 1 st, 2 nd and 3 rd.
Two and two thirds is eight thirds. a) Multiply the whole number 1 by the denominator 4. Whole number 1 equally 1 * 4. b) Add the answer from the previous step 4 to the numerator 1. New numerator is 4 + 1 = 5. c) Write a previous answer (new numerator 5) over the denominator 4. One and one quarter is five quarters. x0YJYgi. 457 106 252 430 225 441 308 261 96