What will be the next number in the given series?
  3, 28, 4, 65, 5,126,6,.........?

Select the option which is related to the third number in the same way as the second number is related to the first number.
  583 : 293 : : 488 : ?

Choose the correct alternative from the given ones that will complete the given sequence.
LXF, MTJ, NPN, OLR, ?

Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it.
deb, ijg, nol ? xyv

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

In each of the following questions, a sequence is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
2, 3, 5, 9, 17, ?

Complete the following number series.
24, 60, 120, 210___

What should come in place of the question mark '?' in the following number series?
 2916, 972, ?, 108, 36, 12