Verbal Reasoning - Mental Ability Questions

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.

Abcd, ghIJ, Mnop, stUV, Yzab, ?

In the following question, select the missing number from the given series.
1, 3, 6, 10, 15, ?

If 5 x 4 x 0 = 405
3 x 2 x 8 = 283
then 1 x 7 x 6 = ?

Weight of C is twice the weight of M. Weight of M is 1/9 of the weight of R. Weight of R is 5/2 of the weight of K. Weight of K is 1/3 of the weight of G. Who is the second lightest?

If "S" denotes "multiplied by", "V" denotes "subtracted from", "M" denotes "added to" and "L" denotes "divided by", then

5 V 9 M 63 L 9 S 7 = ?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
AY, CW, EU, ?

A boy and a girl are playing in a park. The only daughter of the maternal grandfather of the girl, is the sister of the boy's father. How is the boy related to the girl?

Choose the related word/letters/number from the given alternatives. RARE : ERAR : : ROCKET : ?