Number Series Questions

Choose the correct alternative that will continue the same pattern and replace the 'x' in the series 525, 430, 345, 270, x

In each of the following questions a letter-series is given, in which some letters are missing. The missing letters are given in the proper sequence as one of the alternatives. Choose the correct alternatives. _ op _ mo _ n _ _ pnmop _

Find out the wrong term in the series 3, 4, 10, 32, 136, 685, 4116

Choose the correct alternative that will continue the same pattern and replace the 'x' in the series 6,12,21,x,48

Choose the correct alternative that will continue the same pattern and replace 'x' in series 1,2,5,10,25,50,x,250

Find the wrong number from the following series ?
37   47    52    67    87    112    142

Choose the correct alternative that will continue the same pattern and replace 'x' in given series 1,2,6,15,31,56,x

bc _ b _ c _ b _ ccb