Find the number which divides 411, 684, 821 and leaves remainder 3, 4 and 5 respectively.
Answer & explanation
Correct answer: option 3
HCF of (411 - 3), (684 - 4), (821 - 5)
= 408 680 816
↓ ↓ ↓
3×136 5×136 6×136
∴ HCF = 136 is that number which divides 411, 684, 821 and leaves remainder 3, 4 and 5 respectively.