Easy Trick to find Square of Numbers Ending With 5 | Maths Facts | Class 7th | Seema Ma'am #shorts

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In the class of 100 students, the number of students passed in English is 46, in Maths is 46 and in Commerce is 58. The number who passed in English and Maths is 16, Maths and commerce is 24 and English and commerce is 26, and the number who passed in all subjects is 7. Find the number of the students who failed in all subjects.

The first term of a GP is -3 and the square of the second term is equal to its 4th term. Find its 7th term.

In a class of 35 students, 18 students opt Maths, 12 students opt Maths but not Science. Find the number of students who opt both subjects. Also find the number of students two opt Science but not Maths. It is given that each student opt atleast one subject.

Molecular Mass || Gram Molecular Mass || Number of Moles || Number of Molecular Atomicity || Class Illustration with Short Tricks

Average of 13 numbersis 40. If average of first 7 numbers be 42 and that of last 7 be 35,find the 7th number.