REAL NUMBERS important questions class 10 for board exams/ real numbers important sums class 10

REAL NUMBERS CHAPTER 1 CLASS 10 CBSE BOARD. 

Important Questions—REAL NUMBERS 

We provided here important questions class 10 maths — chapter 1 (Real numbers ) to help the students practice better and score good marks in their CBSE board exams. These all questions are as per NCERT book. Solving different types of questions will help them to clear their doubts. 

Let us see some important questions with their solutions: 

Q1. Prove that difference and quotient of (3+2root3) and (3-2root3).

Sol. 

Q2. Find the LCM and HCF of 120 and 144 by using fundamental theorem of Arithmetic.

Sol. 

Q3. The LCM of two numbers is 14 times their HCF. The sum of LCM and HCF is 600. If one number is 280, then find the other number?

Sol. 

Q4. Two tankers contain 850 litres and 680 litres of petrol respectively. Find the maximum capacity of a container which can measure the petrol of either tanker in exact number of times?

Sol.

Q5. Find whether decimal expansion of 13/64 is a terminating or non-terminating decimal. If it terminates, find the number of decimal places its decimal expansion has?

Sol.

Q6. Explain, whether the number 3*5*13*46+23 is a prime number or a composite number?

Sol.

Q7. Three bells toll at intervals of 12 minutes, 15 minutes and 18 minutes respectively. If they start tolling together, after what time will they next toll together?

Sol.

Thank you.