Average run scored by a batsman in first ‘x’ matches is 60. In next 13 matches he scored runs with an average of 80 so that his overall average increased by 10. Find the value of x.
(60x + 13 × 80)/(x + 13) = 70 => 60x + 1040 = 70x + 910 => 10x = 130 => x = 13
11, 1341, 3070, 5267, 8011, 11386
109 106 101 94 86 74
...-20, -16, -7, 9, 31, 70
In each of the following giving number series, a wrong number is given. Find out the wrong number?
46 23 23 34.5 70 172.5
...14, 16, 22, 46, 172, 886
3 6 18 149 602 15057
...132, 130, 136, 126, 142, 110
126 130 114 150 82 186 42
...5, 6, 8, 16, 38, 158
128 384 48 144 20 54
