Verbal Reasoning - Mental Ability Questions

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

5, 10, 30, 120, ?

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

In the following question, select the odd word pair from the given alternatives.

Find the number of triangles in the figure.

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

LMA, NOB, PQC, ? , STE

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
_k_m_kl_jk_m

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

Beijing Olympics, London Olympics, Rio Olympics, ?

In the following figure rectangle represents authors, circle represents Art Critics, triangle represents Tattooists, and square represents joggers. Which set of letters represents Joggers who are either Art Critics or Authors