The cost price of 25 articles is equal to the selling price of 20 articles. What is the gain or loss percent?

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If A+B=, [2/3 3/0] and A-B =[5/2 3/1] then Matrix A is

6⅔ find the factor.

If A {x:x is a factor of 42 } B = {x:x is a factor of 54} Then find AUB, AnB, A-B and B-A.

Write the power set of the following set B={x,y,z}

\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\) using this solve the equation .

9x^2+2x+8=0.

Find the value of integration:

\(\int\frac{sinx+1}{1-cosx}dx\)

Evaluate the integration

\(\int\frac{sinx+2x+1}{cosx+4x+2}dx\)

A resistance of 100 ohms, an inductance of 0.5 henry are connected in series with a battery of 20 volts. Find the current in the circuit as a function of t.

Curie is the unit of_____?

Who was the inventor of Radar?

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