Question

Find the greatest number that divides 390and520 without leaving a reminder

Answer 1

Answer:

Greatest no. that divides 390 and 520 without leaving reminders = HCF of 390 and 520

390 = 13×3×2×5

520 = 13×2×2×2×5

HCF = 13×2×5 = 130

Answer 2

Answer:

HCF is the greatest number that divides the two numbers fully. It can be found by finding the greatest factors which are common in the numbers.

So we write 390 as the products of factors as =2x3x5x13= 3 x130

Similarly, we write 520 as the products of factors as = 2x4x5x13=4x130

We see here 130 is the highest common factor . So the greatest number is 130

Step-by-step explanation:

Greatest no. that divides 390 and 520 without leaving reminders = GCF of 390 and 520  which is 130.