Basic Mathematics

The sum or difference of two irrational numbers is always

rational or irrational

irrational

rational

not determined

If set A = {1, 2, 3, 4, 5,…} is given, then it represents:

Whole numbers

Rational Numbers

Complex number

Natural numbers

Euclid’s division lemma states that for two positive integers a and b, there exist unique integers q and r such that a = bq + r, where r must satisfy

0 ≤ r < b

1 < r < b

0 < r < b

0 < r ≤ b

The values of the remainder r, when a positive integer a is divided by 3 are

1, 2

Only 1

Only 0 or 1

0, 1, 2

For some integer n, the odd integer is represented in the form of:

2n +1

2n

n

n+1

Which of the following is not irrational?

3√7

(3 + √7) (3 – √7)

(3 – √7)

(3 + √7)

he least number that is divisible by all the numbers from 1 to 5 is:

60

70

80

90

The largest number that divides 70 and 125, which leaves the remainders 5 and 8, is:

13

65

15

25

The prime factorisation of 96 is

2^6

2^4 × 3

2^4 × 32

2^5 × 3

If p and q are integers and is represented in the form of p/q, then it is a:

Whole number

Natural number

Even number

Rational number