Total number of artists = 10 + 8 = 18 Let S be the sample space. Then, n(S) = number of ways selecting 4 artists out of 18 = 18C4 = (18 × 17 × 16 × 15)/(3 × 2 × 1) = 3060 Let E= event of selecting 2 dancers and 2 singers n(E) = ¹°C_2×⁸C_2 = (10 × 9 )/(2 ×1) x (8 × 7)/(2 ×1) = 45× 28 = 1260 ∴ P (E) = n(E)/n(S) = 1260/3060 = 7/17
(26)2 = {(20% of 40% of 18200) ÷ ?} × 1664 ÷ 128
(30 × 0.80)⁴ ÷ (2160 ÷ 60)⁴ × (54 × 16)⁴ = (6 × 4)?+5
(?)2 = {(26% of 35% of 3000) ÷ 3} × 91
(?) + (35)2 = (140)2 – (80)2 + 20% of 5480
∛157464 =?
1404 ÷ 26 x 3 + 7 = ?2
7292/3 = ?
641.5 + 72 × 8 = ? × 4
((0.1)3+ (1.8)3+ (1.1)3- 0.3 ×1.8 ×1.1)/((0.1)2+ (1.8)2+ (1.1)2- (0.18)- (...
30% of 215 + 135% of ? = 469.5