For the following questions answer them individually
Out of 40 students, 15 are boys. In a test, the mean marks of the class is 75 and the average marks of the girls is 72. What is the average marks of boys?
B is to the south west of A, C is to the east of B and south east of A, and is also to the south of D which is in line with B and A. What is the direction of D with respect to A?
If A and B are complementary angles, then find the value of $$\cos A \cos B - \sin A \sin B$$.
Find the value of $$(100)^{\frac{1}{2}} \times (0.001)^{\frac{1}{3}} - (0.0016)^{\frac{1}{4}}$$
In a code, 'EDITION' is written as 'IDETNOI'. How will 'MEDICAL' be written in that code?
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