Question
Five people K, L, R, N and S are sitting in a
straight-line facing north. K is sitting immediate right of L. Two people are sitting between R and K. N is sitting adjacent to R but not at the extreme end. S is not sitting adjacent to K. How many people are sitting between S and L?Solution
K is sitting immediate right of Liam. Two people are sitting between R and K. L K ___ ____ R ….. (i) R ____ L K…….. (ii) N is sitting adjacent to R but not at the extreme end. S is not sitting adjacent to K. case (i) will get discarded. L K ___ N  R ….. (i) S  R N  L K…….. (ii) The final arrangement is as follows S        R        N        L         K So, two people are sitting between S and L.
22, 37, 63, 98, 148, ?
14    36    80    168    ?     696
81 72 136 111 ? 278
...?, 6, 6, 9, 18, 45
16, 20, 11, 27, ?, 38
18, 54, 162, ?, 1458, 4374
16, 24, ?, 64, 104, 168, 272
- What will come in place of the question mark (?) in the following series?
121, 115, 102, 82, 55, ? 2, 13, 27, 44, ?, 87
58, 67, ?, 76, 40, 85