# Free CBSE Class 10 Mathematics UNIT I: Number systems Real numbers Worksheets

Download free printable Real numbers Worksheets to practice. With thousands of questions available, you can generate as many Real numbers Worksheets as you want.

## Sample CBSE Class 10 Mathematics UNIT I: Number systems Real numbers Worksheet Questions

1.

1. Why is 7 x 11 x 13 + 7 a composite integer?

1.

7 x 144

2.

54 x 244

3.

12 x 7

4.

70 x 35

2.

Find the largest number which divides 245 and 2055 such that leaves reminder 5 and 7 respectively.

1.

10

2.

16

3.

15

4.

20

3.

If LCM  and HCF of two numbers 45 and K is 180 and 15 then value of k is

1.

15

2.

50

3.

60

4.

10

4.

If m is a natural number , then unit digit in

6^m-5^m is

1.

0

2.

1

3.

2

4.

5

5.

√225 is a irrational number.

1. True 2. False
6.

Such two numbers are possible which LCM is 50 and HCF is 7.

1. True 2. False
7.

If 'm' is a positive prime number then √m

1.

Rational number

2.

Irrational number

3.

Integer

4.

None of these

8.

Product of two numbers is 1080 and their HCF is 30 then their LCM is

1.

5

2.

60

3.

16

4.

36

9.

If the ratio of two numbers is 3:5 and HCF is 4. Then there LCM is

1.

15

2.

60

3.

50

4.

Can't determine

10.

Choose the correct option:   " + " is _______.

1. Binary operation on R 2. Not a binary operation on R 3. A binary operation in Q^c 4. Not a binary operation in E

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