- From 862 Students German Is Studied By 354 Students Russian 443 Spanish 507 5 278 Students Study Both German And 1 (80.92 KiB) Viewed 40 times
From 862 students German is studied by 354 students, Russian - 443, Spanish - 507. 5 278 students study both German and Russian, 174 - both German and Spanish, 263 - Russian and Spanish. None of these three languages are studied by 175 students. How many students study all three languages ? (1) 42; (2) 98; 3 69; (4) 83; (5) 71; (6) 58; (7) 60. How many subsets has set {B, {B, {B, {B, {B, 6}, {u}}}}, {B}} ? 64; 24; 3 16; 4 128; 5 32; (6) 8: 256. 7 In how many ways ten dancers can make circle of five dancers? 1 66528; 1008; 311088; 4332640; 5 6048; 6 30240. 8 How many different combinations can be made from letters of word DIENINIS ? (1) 1260; (2) 302400; 3 10080; 490720; 5 3360; (6) 22680. 9 In how many ways it is possible to put eleven different postcards into eight identical envelopes ? (1) 18150; (2) 45; 3 145750; 41023; 5 678570; 6 3416930; (8) 11880. 90; 6