I was creating Puzzles for "Sudoku Mock 21". Some of the puzzles which I create was of the type "Guess the number in the series Sudoku" whose Instructions read as below.
This Sudoku type follow the standard Sudoku rules plus some of the squares will be grayed which can contain numbers from the given series. All but one numbers in the series will be given. Series follows particular pattern. One has to find the missing number by following the series pattern and then solve the Sudoku.
During the testing it was found that it was difficult to find the number in the series. So I decide to drop this puzzle type from the mock test and instead of this all the numbers in the series will be given. So these number series I am posting it here. Do put your comments guessing the number which will come next in the series.
6 6 7 ? 8 6 8
3 1 4 1 5 ?
2 1 8 ?
1 3 5 ?
Hint: It is not 7.
3 3 ? 4 4 3 ? ? 4