Question

Choose the correct statements.

• A. 1 is the smallest natural number
• B. 1 is the smallest whole number
• C. -1 is the smallest negative integer
• D. 0 is an integer

Answer 1

Answer: (A), (D)

The correct options are
A

1 is the smallest natural number

D

0 is an integer

Natural numbers are all the counting numbers starting from 1, i.e. {1, 2, 3, ...}
Therefore, statement: '1 is smallest natural number'; is correct.

Whole numbers are all counting numbers and zero, i.e. {0, 1, 2, 3, ...}
Therefore, statement: '1 is smallest whole number'; is wrong.

Integers include the set of natural numbers, their negatives and 0; i.e. {...-3, -2, -1, 0, 1, 2, 3, ...}. Thus, -1 is the greatest negative integer, not the smallest one.

0 is included among integers.
Hence, the statement is correct.