Which set of letters when sequentially placed at the gaps in the given letter series shall complete it?

x_zz_xx_z_yx

If "A" denotes "multiplied by", "B" denotes "subtracted from", "C" denotes "added to" and "D" denotes "divided by", then

8 B 31 C 49 D 7 A 16 = ?

In the following question, two statements are given each followed by two conclusions I and II. You have to consider the statement to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.

Statements:
(I) All birds are trees.
(II) Some trees are hens.

Conclusion:
(I) Some birds are hens.
(II) Some hens are trees.

In a certain code language, "RAINBOW" is written as "1987645" and "SNAP" is written as "3790". How is "PIANO" written in that code language?

Arrange the given words in the sequence in which they occur in the dictionary.

i. Beguile
ii. Bigot
iii. Begun
iv. Bigamy

Mohan, Ritika, Janvi, Priya and Riya are friends. Janvi runs faster than Ritika but slower than Priya. Mohan is the slowest runner and Riya runs faster than Priya. Who runs the fastest among the five?

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

0.5, 2, 3.5, ? , 6.5

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

2, 3, 7, 16, ?