 Hello and welcome to the session. My name is Mansi and I am going to help you with the following question. The question is, find the hcf of the following numbers 70, 105 and 175. Let us start with the solution to this question. By the method of prime factorization, we see the prime factors of 70 are 5, 7 and 2, so it is 5 into 7 into 2. Similarly, 105 can be expressed as 5 into 7 into 3 and 175 can be expressed as 5 into 5 into 7. Therefore, hcf of 70, 105 and 175 is 5 into 7 that is equal to 35 and this is our answer to this question. I hope you understood the question and enjoyed the session. Have a good day.