Question

1. Which of the following is correct?
a) Every whole number is a natural number
b) Every integer is a rational number
c) Every rational number is an integer
d) Every integer is a whole number
2. Out of the following, the irrational number is
a) b) c) d)
3. To rationalise the denominator of we multiply the expression by +
a) b) c) d)
4. The number of rational numbers between and is
a) One b) Three c) Five d) Infinitely many
5. If we add two irrational numbers, the resulting number
a) is always an irrational number b) is always a rational number
c) may be a rational or an irrational number d) is always an integer
6. The rationalising factor of is
a) b) c) d)
7. If then equals
a) b) c) d)
8. The value of n for which be a rational number is
a) 2 b) 4 c) 3 d) 5
9. equals
a) b) c) d)
10. equals
a) b) c) d)
1.5 1.277 π 2.477

1 , a+b

1
a+b

a–b
a – b

1
a + b

a+b
a + b

3 5

7-2 3

7+2 3 7–2 3 4+2 3 5+2 3
1 = 0.142857, 7
4
7

0.428571 0.285718 0.857142 0.571428

n

1
2 3

1
3 2

(3 + 3)(3 – 2)
3 12
6 27

9–5 2– 6 3+ 2 9– 6 9–3 2+3 3– 6

38
11. The arrangement of in ascending order is
a) b)
c) d)
n mn 12. It is m and n are two natural numbers and m = 32, then n is
2 3 10 12 a) 5 b) 5 c) 5 d) 5
13. If then the value of is
a) 0.3162 b) 3.162 c) 31.62 d) 316.2
14. If then the value of x is
a) 4 b) –2 c) 2 d) 6

Answer 1

Step-by-step explanation:

Q1) d part is correct

ok got ot