Вычислите:
а) 3 * 5 * 2 * 7;
б) 5 * 5 * 6 * 4;
в) 7 * 2 * 5 * 2 * 5;
г) 2 * 9 * 5 * 5 * 4;
д) 8 * 4 * 125 * 25;
е) 5 * 2 * 2 * 2 * 2 * 5 * 5 * 5 * 6.
3 * 5 * 2 * 7 = (5 * 2) * (7 * 3) = 10 * 21 = 210
5 * 5 * 6 * 4 = (5 * 4) * (5 * 6) = 20 * 30 = 600
7 * 2 * 5 * 2 * 5 = (2 * 5) * (2 * 5) * 7 = 10 * 10 * 7 = 100 * 7 = 700
2 * 9 * 5 * 5 * 4 = (5 * 2) * (5 * 4) * 9 = 10 * 20 * 9 = 10 * 180 = 1800
8 * 4 * 125 * 25 = (25 * 4) * (125 * 8) = 100 * 1000 = 100000
5 * 2 * 2 * 2 * 2 * 5 * 5 * 5 * 6 = (5 * 2) * (5 * 2) * (5 * 2) * (5 * 2) * 6 = 10 * 10 * 10 * 10 * 6 = 10000 * 6 = 60000