Which player won their 7th Blitz title in the 2024 Open

What will come in place of the question mark (?) in the following series?

20, ?, 30, 60, 150, 450

-1, 5, 23, 59, ?

Find the missing number in the given number series.

2, 5, 11, 23, 47, ?

48, 24.5, ?, 39.75, 81.5, 206.25, 621.75

What will come in place of the question mark (?) in the following series?

24, 36, 16, 46, 4, ?, -12 

What will come in place of the question mark (?) in the following series?

146, 122, ? , 74, 50, 26

660, 653, 639, 618, 590, ?

65, 90, 140, ?, 315, 440

64, 66, 69, 74, 81, ?