The two metal ions that cause hardness to water

Find the wrong number in the following number series:

1250, 500, 200, 80, 30

Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster.

A paper is folded and cut as shown below. How will it appear when unfolded ?

Select the set in which the numbers are related in the same way as are the numbers of the given sets.

Pointing at a girl, Seema said, “She is my father’s mother’s husband’s only son’s daughter.” How is that girl related to Seema?

Vacant : Empty : : Enormous : ?

Change the question mark with the option that follows the applied logic in the first pair.

Man: Woman :: Boys: ??

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

RT, WE, BP, GA, ?

What should come in place of question mark (?) in the given series based on the English alphabetical order?

AYF, FUI, KQL, PMO, ?

Select the combination of letters that, when sequentially places in the gaps of the given letter series will complete the series.