What is the least number of soldiers that can be drawn up in troops of 12, 15, 18 and 20 soldiers and also in form of a solid square?
- 900
- 400
- 1600
- 2500
Explanation
In this type of question, We need to find out the LCM of the given numbers.
LCM of 12, 15, 18 and 20;
12=2×2×3;15=3×5;18=2×3×3;20=2×2×5;
Hence, LCM = 2×2×3×5×3
Since, the soldiers are in the form of a solid square.
Hence, LCM must be a perfect square. To make the LCM a perfect square, We have to multiply it by 5,
hence,
The required number of soldiers
= 2×2×3×3×5×5
= 900
Related MCQs
- 66
- 76
- 86
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 220
- 240
- 252
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
