engineering recuitment NFC Chemical Plant Operator Mock Test Quantitative Aptitude Number System LCM and HCF
In a school during assembly the students are to be arranged in the rows either 9 or 15 or 20 or 30. Also the students should stand in the form of a solid square. What should be the least number of students in the school?
1
180
2
360
3
900
4
540