The ages of Sulekha and Arunima are in the ratio of 9 : 8 respectively. After 5 years the ratio of their ages will be 10 : 9. What is the difference in years between their ages ?

42 women can do a piece of work in 18 days. How many women would be required to do the same work in 21 days?

Statements: All sharks are fishes. Some fishes are birds. All birds are trees. All trees are insects.

Conclusions:

I. Some insects are sharks.

II. Some sharks are trees.

III. All insects are birds.

IV. Some birds are sharks.

Statements: All tables are round. Some hills are round. Some rivers are hills. All rivers are conical.

Conclusions:

I. Some rivers are round.

II. Some hills are conical.

III. Some rivers are both hills and round.

IV. Some tables are conical.

Statements: Some buildings are rivers. Somemountains are both buildings and rivers. Some roads are buildings. All roads are trucks.

Conclusions:

I. Some mountains are roads.

II. Some buildings are trucks.

III. Some rivers are roads.

IV.Some trucks are rivers.

Statements: All books are diaries. Some diaries are pens. Some pens are drawers. All drawers are chairs.

Conclusions:

I. Some drawers are diaries.

II. Some chairs are pens.

III. Some pens are books.

IV. Some diaries are books.