P (A truth) = Probability that A speaks the truth =5/7 P (A lie) = Probability that A lies = 1 - P (A truth) =1-5/7 =2/7 P (B Truth) = Probability that B speaks the truth = 5/9 P (B lie) = Probability that B lies = 1- P (B truth) = 1-5/9 =4/9. 
16, 15, 24, -1, 48, ?
140, 146, 158, 176, ?, 230
15.975 ×27.825 + (76.01)² + 12.98×18.426 = ?+ (79.09)²
216, 81, 297, 378, ?, 1035, 1728
45, 59, 31, ?, 17, 87
18 29 16 31 ? 33
32, 64, 144, ?, 990, 2970
16, 9, ?, 114.25, 750.625, 6396.3125
14 6 4 4 ? 48
...58 69 56 ? 54 73
...
