Question

what is hcf of 900and 270?

Answer 1

900=270*3+90
270=90*3+0
therefore the HCF of 900 & 270 is 90

Answer 2

Factors of 900 = 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 150, 180, 225, 300, 450 and 900. 

Factors of 270 =1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135 and 270. 

Therefore, common factor of 900 and 270 = 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45 and 90. 

Highest common factor (H.C.F) of 900 (Nine hundred) and 270 (Two hundred seventy) = 90.