Choose the correct alternative from the given ones that will complete the given sequence.
1.5, 2.3, 3.1, 3.9, ?

Find the missing number in the given series.
1, 3, 9, 31, ___ 651

Which of the following numbers will replace the question mark (?) in the given series?

? 11, 35, 107, 323

Complete the series.
TEA, UFB, ?, WHD

There are 4 friends A, B, C and D standing in a straight line, though not necessarily in the same order. A and B are ahead of at least 1 person. B stands between C and D. D does not stand last. Who stands first?

Find the next term in the given series.
 1200, 600, 300,  ?

Find the missing number:
2, 5, 10, 17, 26 ,?

Complete the following series.
2, 5, 26, ?