The following question has a sequence of numbers or letters that follow a definite pattern is given. Each questionhas 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.
Mouse : Cat :: ---------- : Tiger
100 : 9999 :: 60 : ------
$$B \otimes Z : 2 \otimes 26 :: E \otimes T : ------$$
READ : DEAR :: --------- : PINK
7 : 63 :: 15 : ----------
7 : 342 :: 9 : -------
DRIVER : ESJWFS :: HELMET : ---------
LKJ : onm :: -------- : hgf
$$\sum_{K=1}^{n} : \frac{n(n+1)}{2} :: \sum_{K=1}^{n} K^2 : ---------$$
54 : 88 :: 180 : --------