Question
A boy leaves from his home. He first walks 50 metres in
North-west directions and then 50 metres in South-west direction. Next, he walks 50 metres in south-east direction. Finally, he turns towards his home. In which direction is he moving? ÂSolution

10, 20, 60, 300, ?, 23100
324Â Â Â Â Â Â Â Â 972Â Â Â Â Â Â Â Â 486Â Â Â Â Â Â Â Â 1458Â Â Â Â Â Â 729Â Â Â Â Â Â Â Â ?
...18, 30, 54, 90, 138, ?
23, 39, 64, 100, ?, 213
6, 7, 16, 51, 208, ?
What will come in place of the question mark (?) in the following series?
4, 2605, 5309, 8118, ?
What will come in place of the question mark (?) in the following series?
68, 76, 61, 85, ?, 98
4097, ?, 4359, 4493, 4629, 4767
36   37    33   42    ?      51    15
...Choose the missing term.
3F, 6G, 11I, 18L,?