If by selling an article for Rs. 390 a shopkeeper gains 20% , then the cost is
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If √(cosec2A - 1) = x, then the value of x is
If (4x - 3) - (2x + 1) = 4, then the value of x is
If sin - 4π/3 = x, then the value of x is
What is the compound interest (in Rs) for 1 year on a sum of Rs 20000 at the rate of 40% per annum compounding half yearly?
If x/y = 2/3, then what is the ratio of (3x + 2y) and (3x – y)?
If x2+y2+z2-8x+6y-4z+29 = 0, then find the value of z(x+y).
Simplify : 132 - 142 + 172 - 250 = ?