model 1 basic number system Section-Wise Topic Notes With Detailed Explanation And Example Questions

Question : 1

$√2$ is a/an

a) rational number

b) natural number

c) irrational number

d) integer

Question : 2

The number $√3$ is

a) a finite decimal

b) an infinite recurring decimal

c) equal to 1.732

d) an infinite non-recurring decimal

Question : 3

There are just two ways in which 5 may be expressed as the sum of two different positive (non-zero) integers, namely 5 = 4 + 1 = 3 + 2. In how many ways, 9 can be expressed as the sum of two different positive (non-zero) integers?

a) 3

b) 4

c) 5

d) 6

Question : 4

Every rational number is also

a) an integer

b) a real number

c) a natural number

d) a whole number

Question : 5

Consider the following statements about natural numbers: (1) There exists a smallest natural number. (2) There exists a largest natural number. (3) Between two natural numbers, there is always a natural number. Which of the above statements is/are correct?

a) None

b) Only 1

c) 1 and 2

d) 2 and 3

Question : 6

All natural numbers and 0 are called as _______ numbers.

a) Rational

b) Integers

c) Whole

d) Prime