Math, asked by lovely30mishra, 5 months ago

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Answered by SandeepAW
0

Answer:

(i) 16,24,40.

2|16. 2|24. 2|40.

2|8. 2|12. 2|20.

2|4. 2|6. 2|10.

2|2. 3|3. 5|5.

1. 1. 1.

16=2⁴, 24=2³×3, 40=2³×5.

LCM(16,24,40)=2⁴×2³×3×2³×5.

=16×8×3×8×5.

=15360.

(ii) 40,56,60.

2|40. 2|56. 2|60.

2|20. 2|28. 2|30.

2|10. 2|14. 3|15.

5|5. 7|7. 5|5.

1. 1. 1.

40=2³×5, 56=2³×7, 60=2²×3×5.

LCM(40,56,60)=2³×5×2³×7×2²×3×5.

=8×5×8×7×4×3×5.

=134400.

(iii) 207,138.

3|207. 2|138.

3|69. 3|69.

23|23. 23|23.

1. 1.

207=3²×23, 138=2×3×23.

LCM(207,138)=3²×23×2×3×23.

=27×23×2×3×23.

=28566.

(iv) 72,96,120.

2|72. 2|96. 2|120.

2|36. 2|48. 2|60.

2|18. 2|24. 2|30.

3|9. 2|12. 3|15.

3|3. 2|6. 5|5.

1. 3|3. 1.

1.

72=2³×3², 96=2^5×3, 120=2³×3×5.

LCM(72,96,120)=2³×3²×2^5×3×2³×3×5.

=8×9×32×3×8×3×5.

=829440.

(v) 120,150,135.

2|120. 3|150. 3|135.

2|60. 5|50. 3|45.

2|30. 5|10. 3|15.

3|15. 2|2. 5|5.

5|5. 1. 1.

1.

120=2³×3×5, 150=3×5²×2, 135=3³×5.

LCM(120,150,135)=2³×3×5×3×5²×2×3³×5.

=8×3×5×3×25×2×27×5.

=2430000.

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