Find the HCF of (4315 - 1) and (425 - 1).
Answer & explanation
Correct answer: option 4
an - bn is divided by a1 - b1; if n is odd number
(x3)n-(y3)n x3-y3
X15-y15 x3-y3
Given = (4315 - 1315) (425 - 125)
↓ ↓
(463 × 5 - 163 × 5) (45 × 5 - 15 × 5)
HCF = (45 - 15) = 1024 - 1 = 1023