Elitmus Exam Numerical Ability LCM and HCF

in a class 1/16 of student for maths ,1/10 of student for bio, 1/8 of student for english, total student number is 4 digite no, then find the diffrence between maximum no of student and minimum no of student

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Elitmus Other Question
there are more than 501 students in a school such that 20% of them exactly took physics and 28% of them exactly took maths.what could be the least possible no of students in the school?

a)550 b)600 c)700 d)none of these arrange in increasing order of profit:
1)one sells more than 20% than c.p
2)use a false weight of 800 gm instead of 1000 gm
3)mixes 20% impurities and sells at c.p
4)use a false weight of 900 gm instead of 1000 gm and sells at 10% more than c.p