4. A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series. 200, 100, 50, 25, 12.5, 6.25, ?
7. A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series. 1.5, 9/4, 3, ? , 4.5, 21/4
8. A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series. -7/4, -1, -0.25, ? , 5/4, 2