Question

Find the largest number which exactly divides 280 and 1245

Answer 1

Step-by-step explanation:

280 - 4 = 276

1245 - 3 = 1242

276 = 2 x 2 x 3 x 23

1242 = 2 x 3 x 3 x 3 x 23

HCF = 2 x 3 x 23 = 138

∴138