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प्रश्न
Find the L.C.M. of 140 and 168. Use the L.C.M. obtained to find the H.C.F. of the given numbers.
उत्तर
Numbers are 140 and 168
L.C.M. of 140 and 168
| 2 | 140, | 168 |
| 2 | 70, | 84 |
| 7 | 35, | 42 |
| 5, | 6 |
= 2 × 2 × 7 × 5 × 6 = 840
H.C.F. =`"1st number×2nd number"/"L.C.M."`
= `(140×168)/840`
= 28
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