With which of the following game is Davis cup

In the following question, select the wrong number from the given alternatives.

52, 26, 26, 52, 208, 1644

In the following question, select the wrong number from the given alternatives.

18, 30, 54, 90, 138, 192, 270

Select the wrong term in the series.

10, 19, 23, 52, 61, 133, 149

Identify the letter-cluster that does not belong to the following series.

RBK, TYM, VVO, XSP, ZPS, BMU

8, 20, 48, 108, 232, 482

Select the wrong term in the series.

312, 320, 304, 328, 295, 336

Find the wrong number in the given number series.

50, 62, 86, 130, 230

Find the wrong number in the following number series:

2500, 1000, 400, 160, 60

3. 8, 15, 24, 34, 48, 63

Find the wrong number in the series given below.

7, 22, 68, 217, 625, 1880