A sequence of numbers or letters that follow a definite pattern is given. Each question has a blank space. This has to be filled by the correct answer from the four given options to complete the sequence without breaking the pattern.
C : X :: ------ : U
TSR : IHG :: WVU : -------
1973 : February 28 :: 2016 : -------
$$\sqrt{9 + 2\sqrt{14}}, \sqrt{7 + \sqrt{58}}, \sqrt{5 + 2\sqrt{15}}, \sqrt{3 + \sqrt{62}}, -------$$
16GH61TS, 25EF52VU, 36CD63XW, ---------
336, 210, 120, 60, ---------
B, A, D, E, F, I, H, ------, J, U
14, 22, 32, 44, 58, -------, 92
1 C 5, 7 I 11, --------, 19 U 23
$$\frac{2}{5}, \frac{3}{10}, \frac{5}{26}, -----, \frac{11}{122}$$