Question
Average 20 numbers is ‘x’. If the average of first
12 numbers is 62.5 while average of last 5 numbers is 74.8 and 13th, 14th and 15th numbers are (2x - 33), (4x + 54) and 178 respectively. Find the 14th number.Solution
According to question, => 20x = 62.5 × 12 + 74.8 × 5 + 2x – 33 + 4x + 54 + 178 => 14x = 1323 => x = 94.5  Therefore, 14th number = 4 × 94.5 + 54 = 148.5
25Â Â Â 26Â Â Â Â 28Â Â Â Â 32Â Â Â Â 42Â Â Â Â 56
In each of the following number series, one term is wrong. Find the WRONG term.
6, 9, 15, 27, 53, 99, 195
Find the wrong number in the given number series.
22, 29, 50, 89, 134, 197
11Â Â Â Â Â 29Â Â Â Â Â Â 45Â Â Â Â Â 59 Â Â Â Â Â Â 70 Â Â Â Â Â Â Â 81
...- Find the wrong number in the given number series.
7, 14, 28, 56, 90, 224 320, 385, 452, 526, 606, 695
Find the wrong number in the given number series.
8.6, 11.3, 16.7, 24.2, 35.6, 49.1
119, 145, 186, 249, 340, 483
192Â Â Â 576Â Â Â 72Â Â Â 216Â Â Â 28Â Â Â 81
2824Â Â Â Â 2314Â Â Â Â Â 1973Â Â Â Â 1759Â Â Â Â 1634Â Â Â Â 1574
