Important questions of Maths class 10 chapter 1 Real number
Important questions of Maths class 10 chapter 1 Real number
CLASS – X
CHAPTER – 1 REAL NUMBERS
OBJECTIVE TYPE QUESTIONS
Important questions of Maths class 10 chapter 1 Real number
SUBJECTIVE TYPE QUESTIONS
- Explain why 11 X 13 X 15 X 17 + 17 is a composite number ?
- If three pieces of planks 63m, 42m and 49 m long have to be divided into planks of same length, then what will be the least possible number of planks?
- Three bells toll at intervals of 9, 12, 15 mins respectively. If they start tolling together, after what time will they next toll together?
- Show that any positive integer is of the form 3q or, 3q + 1 or, 3q + 2 foe some integer q.
- Show that n2 – 1 is divisible by 8, if n is an odd positive integer.
- Show that one and only one out of n, n+2 or, n+4 is divisible by 3, where n is any positive integer.
- Check whether 4n can end with the digit 0 for any natural number n.
- The L.C.M of two numbers is 14 times their H.C.F. The sum of L.C.M and H.C.F is 600. If one number is 280, then find the other number.
- Find HCF of 96 and 404 by prime factorization method. Hence find their L.C.M
- Find the largest positive integer that will divide 398, 436 and 542 leaving remainders 7, 11 and 15 respectively.
- 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.
- Prove that √8 is irrational.
- Prove that is irrational
- The length, breadth and height of a room are 8m 25cm, 6m 75cm, and 4m 50cm. respectively. Determine the longest rod which can measure the three dimensions exactly.
- Find the H.C.F and L.C.M of 144, 180 and 192 by prime factorization method.
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Important questions of Maths class 10 chapter 1 Real number
Important questions of Maths class 10 chapter 1 Real number
Important questions of Maths class 10 chapter 1 Real number
