Class 10 CBSE Maths Real Number Boards Questions
Here we provide Class 10 Maths important notes,board questions and predicted questions with Answers for chapter Real Number. These important notes,board questions and predicted questions are based on CBSE board curriculum and correspond to the most recent Class 10 Maths syllabus. By practising these Class 10 materials, students will be able to quickly review all of the ideas covered in the chapter and prepare for the Class 10 Board examinations.
2018
Q1
What is the HCF of smallest prime number and the smallest composite number ?
solutions
solutions
Q2
Given that √2 is irrational, prove that (5 + 3√2) is an irrational number.
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solutions
Q3
Find HCF and LCM of 404 and 96 and verify that HCF X LCM = Product of the two given numbers.
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solutions
2019
Q4
If HCF(336,54) = 6, find LCM(336,54)
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solutions
Q5
Write the smallest number which is divisible by both 306 and 657
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solutions
Q6
(A) Prove that 2 + 5√3 is an irrational number given that √3 is an irrational number
OR
(B) Using Euclid's Algorithm, find the HCF of 2048 and 960.
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(B) Using Euclid's Algorithm, find the HCF of 2048 and 960.
solutions
2020
Q7
The total number of factors of a prime number is
(a) 1
(b) 0
(c) 2
(d) 3
solutions
(a) 1
(b) 0
(c) 2
(d) 3
solutions
Q8
The HCF and LCM of 12, 21, 15 respectively are
(a) 3, 140
(b) 12, 420
(c) 3, 420
(d) 420, 3
solutions
(a) 3, 140
(b) 12, 420
(c) 3, 420
(d) 420, 3
solutions
Q9
225 can be expressed as
(a) 5 x 32
(b) 52 x 3
(c) 52 x 32
(d) 53 x 3
solutions
(a) 5 x 32
(b) 52 x 3
(c) 52 x 32
(d) 53 x 3
solutions
Q10
HCF of 144 and 198 is
(a) 9
(b) 18
(c) 6
(d) 12
solutions
(a) 9
(b) 18
(c) 6
(d) 12
solutions
Q11
2.35 is a
(a) an integer
(b) a rational number
(c) an irrational number
(d) a natural number
solutions
(a) an integer
(b) a rational number
(c) an irrational number
(d) a natural number
solutions
Q12
(A) Given that √3 is an irrational number show that ( 5 + 2√3) is an irrational
number
OR
(B) An army contingent of 612 member is to march behind an army band of 48 member in a parade. The two groups are to march in the same number of columns. What is the maximum number of columns in which they can march?
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(B) An army contingent of 612 member is to march behind an army band of 48 member in a parade. The two groups are to march in the same number of columns. What is the maximum number of columns in which they can march?
solutions
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