Question

i want to solve hcf of 132,136,140 by long division method

Answer 1

132, 136, 140
Division by 2: 66, 68, 70 ***
Division by 2: 33, 34, 35 ***
Division by 2: 33, 17, 35
Division by 3: 11, 17, 35
Division by 5: 11, 17, 7
Division by 7: 11, 17, 1
Division by 11: 1, 17, 1
Division by 17: 1, 1, 1

In the first two steps, all numbers changed, so the HCF is 2 x 2 = 4.