Choose the odd word/letters/number/number pair from the given alternatives.
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A man, rowing a boat, covers a distance of 16 km in two hours downstream. He covers half the distance in same amount of time when rowing upstream. Calculate the speed of the stream.
Δ ABC is right angled at B. If m∠A = 60°, then what is the value of 2 Sec C x 1/2 Sin A?
If cosθ = x2-y2x2+y2, then the value of cotθ is
Find equation of the perpendicular bisector of segment joining the points (2,6) and (4,0)?
If XY = a+23 and YX = 13, then find the value of X2 + Y2X2 - Y2.
What is the value of cos 11π/6?