Question
Find the HCF set of numbers using prime factorisation method.
84, 120
84, 120
✓
Answer
84, 120
Prime factorisation of 84 = 2 × 2 × 3 × 7
Prime factorisation of 120 = 2 × 2 × 2 × 3 × 5
Common factors of 84 and 120 = 2 × 2 × 3
HCF (84, 120) = 12
Prime factorisation of 84 = 2 × 2 × 3 × 7
Prime factorisation of 120 = 2 × 2 × 2 × 3 × 5
Common factors of 84 and 120 = 2 × 2 × 3
HCF (84, 120) = 12
| 2 | 84 |
| 2 | 42 |
| 3 | 21 |
| 7 | 7 |
| 4 |
| 2 | 120 |
| 2 | 60 |
| 2 | 30 |
| 3 | 15 |
| 5 | 5 |
| 1 |
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The America’s famous Golden Gate bridge is 6480 ft long with 756 ft tall towers. A model of this bridge exhibited in a fair is 60 ft long with 7 ft tall towers. Is the model, in proportion to the original bridge?
Write the largest six digit number and put commas in the Indian and the International System
A man bought 400 metre of cloth for ₹ 60,000 and sold it at the rate of ₹ 400 per metre. Find his profit or loss
Convert into higher units:
$8257$ ml (kl, l)
→$8257$ ml (kl, l)
Use the properties of whole numbers and simplify.
50 × 102
If one angle of an isosceles triangle is 124°, then find the other angles
A stationery shop owner bought a scientific calculator for ₹ 750. He had put a battery worth ₹ 100 in it. He had spent ₹ 50 for its outer pouch. He was able to sell it for ₹ 850. Find his profit or loss
Calculate the duration of time.
from 17:00 hours to 5:15 hours
from 17:00 hours to 5:15 hours
Draw the next two patterns and complete the table.
→
| Shapes | $1^{st}$ Pattern |
$2^{rd}$ Pattern |
$3^{rd}$ Pattern |
$4^{th}$ Pattern |
$5^{th}$ Pattern |
| Squares | 1 | 2 | 3 | ||
| Circles | 1 | 2 | 3 | ||
| Triangles | 2 | 4 | 6 |
In a cycle factory, 1560 bicycles were manufactured every day. Find the number of bicycles manufactured in 25 days