Maths ncert solutions class 10 chapter 1 exercise 1.2
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{1, 2, 3, 4, 5, 6, 7, 8} Hence ,set {1, 2, 3, 4, 5, 6, 7, 8} cannot be the universal set for the sets A, B and C. When a function is one — one as well as onto, it is said to be invertible function. Page No: 14 Exercise 1. About 12 Maths Exercise 1. That is, not possible as the only prime in the factorisation of is 2 and 3 and the uniqueness of the Fundamental Theorem of Arihmetic guarantees that there are no other primes in the factorisation of.

Page No: 17 Exercise 1. As they are going in the same direction, they will meet again at the same time when Ravi will have completed 1 round of that circular path with respect to Sonia. By how much was his answer greater than the correct answer? What are the values that r can take? So value 6 n should be divisible by 2 and 5 both 6 n is divisible by 2 but not divisible by 5 So it can not end with 0. {x: x is a natural number, x7} iv. This solution provides you a better and easy understanding way, so students understand the concepts in a very easy and structured way. True Since, Element a of {a} is also present in {a, b, c}. These expert faculties solve and provide the for maths so that it should help students to solve the problems easily.

The set of positive integers which are greater than 100. Ncert solution class 10 Maths includes text book solutions from Mathematics Book. Hence this rational number has terminating decimal expansion. The following real numbers have decimal expansions as given below in each case decide whether they are rational or not. Hence this rational number has terminating decimal expansion. The number of tickets sold at the counter on the first, second, third, and final day was respectively 1094, 1812, 2050, and 2751.

{1, 2, 3, 4, 5, 6, 7, 8} Answer i. This might happen sometimes as we use javascript there. How much money will remain with her after the purchase? The two groups are to march in the same number of columns. Click here to go back to all exercises or go for solutions, if you want to change the medium of solutions as English. These solutions are prepared by our expert faculties to help students in their board exam preparations. We really do hope that this resolve the issue. Solution: Let a be any odd positive integer we need to prove that a is of the form 6q + 1 , or 6q + 3 , or 6q + 5 , where q is some integer.

Seven crore fifty two lakh twenty one thousand three hundred two. That is, the prime factorisation of contains the prime 5. Then 5 must be a prime factor of it. Therefore, 6 q + 1, 6 q + 3, 6 q + 5 are not exactly divisible by 2. Register for our free webinar class with best mathematics tutor in India. But the prime factor of q is not of the form 2 n5 m e, the prime factor of q will also have a factor other than 2 or 5. There is a circular path around a sports field.

Therefore, it is a composite number. Sonia takes 18 minutes to drive one round of the path, while Ravi takes 12 minutes for the same. In other words, it will also be divisible by 2 and 5 as Prime factorisation of It can be observed that 5 is not in the prime factorisation of. Numbers are of two types — prime and composite. An army contingent of 616 members is to march behind an army band of 32 members in a parade.

Fifty eight million four hundred twenty three thousand two hundred two. Page No: 11 Exercise 1. If for each elements in domain, there is one and only one element in co-domain, then it is called one-one. Ncert solution class 10 Maths includes text book solutions from Mathematics Book. It has many applications related to the divisibility properties of integers. True Since, a, e and i are the three vowels of the English alphabet. The Fundamental Theorem of Arithmetic, on the other hand, has to do something with the multiplication of positive integers.

Question 6: A machine, on an average, manufactures 2,825 screws a day. Click here to go back to all exercises or go for Solutions, if you want to see the solutions in Hindi. Write down the decimal expansions of those rational numbers in Question 1 above which have terminating decimal expansions. Students already know that every composite number can be expressed as a product of primes in a unique way—this important fact is the Fundamental Theorem of Arithmetic. There is circular path around a sports field. Therefore, they can march in 8 columns each. Question 9: To stitch a shirt, 2m 15 cm cloth is needed.

After how many minutes will they meet again at the starting point?. The set of right triangles ii. {x: x is a point common to any two parallel lines} Answer i Null Set A set of odd natural numbers which are divisible by 2 is a null set as none of the odd numbers is divisible by 2. Although this result is quite easy to state and understand, it has many applications related to the divisibility properties of integers. Hint: Do you need to do both the multiplications? Hence this rational will not have terminating decimal expansion.