Real Numbers Class 10

Real Numbers Previous Yr Questions Class X : 

1. Find the [𝐻𝐶𝐹 × 𝐿𝐶𝑀] for the numbers 100 and 190

2. Prove that 3 + √2 is an irrational number.

3. Prove that √5 is an irrational number.

4. Prove that 2 - 3√5 is an irrational number

5. The pair of co-prime is 

(a) 32,40       (b) 21, 28           (c) 18, 25          (d) 9,27

  6. Product of two co-prime numbers is 117. Their L.C.M. should be

(a) 1 (b) 117 (c) equal to their H.C.F. (d) Lies between 1 to 117

7.   Which of the following statement(s) is/are always true?

(a) The sum of two distinct irrational numbers is rational.

(b) The rationalising factor of a number is unique.

(c) Every irrational number is a surd.

(d) None of these

8. The product of a non zero rational and an irrational number is

(a) always irrational (b) always rational (c) rational or irrational (d) one

9. 3.27 is       (3.27bar above .27)

(a) an integer (b) a rational number (c) a natural number (d) an irrational number

Work Sheet of Real Numbers  : In pdf format :  

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