Select the figure that does not belong in the following group.

The mean score in a test of the 12 boys in a class was 16 while the overall mean of the 30 students in the class was 18.1. What was the mean score of the girls?

Which of the following elements has a total of 3 shells with 8 electrons in the last orbit?

Consider the given statements true and decide which of the given conclusions logically follows from the statements.

Statements :

1. Some tables are books.

2. All books are chairs.

Conclusions :

1. Some books are tables.

2. Some chairs are books.

A compressed spring possesses more energy than a spring of normal length because the compressed spring has

___ are the carriers of heredity material.

Consider the given statements as true and decide which of the given conclusions can definitely be drawn from the given statements.

Statements :

All carpenters are workers. All workers are hardworking.

Conclusions :

1. All the hardworking people are workers.

2. All the carpenters are hardworking.

The median of the numbers 3, 1, 1 5, 2 and 7 is