Amicable Numbers #shorts #amicablenumbers #mathematics

In a class of 80 students numbered 1 to 80, all even numbered students opt for physics, whose numbers are divisible by 5 opt for chemistry and those who are divisible by 7 opt for mathematics. Number of students who offered mathematics

Out of 64 students, the number of students taking Mathematics is 45 and number of students taking both Mathematics and Biology is 10. Then, the number of students taking only Biology is

In a class of 35 students , 17 have taken Mathematics , 10 have taken mathematics but not economics if each student has taken either mathematics OR Economics or both , then the number of students who have taken Economics but not mathematics is

In a school there are 30 teachers who teach Mathematics or Physics. Of these teachers, 20 teach. Mathematics and 15 teach Physics, 5 teach both Mathematics and Physics. The number of teaches teaching only Mathematics is:

In a class of 100 students 90 have taken mathematics 70 have taken mathematics but not biology. Find the number of students who have taken biology but not mathematics. Each student has taken either mathematics or biology or both.

In a class of 25 students,12 have taken mathematics,8 have taken mathematics,but not biology.Find thenumber of students who have taken both mathematics and biology and the number of those who havetaken biology but not mathematics.Each student has taken either mathematics.or biology or both.

Comprehension: In a class of 25 students of Mathematics and Computer Science, 12 students have taken Mathematics. Out of this, 8 have taken Mathematics but not Computer Science. What is the number of students who have taken both Mathematics and Computer Science?