For what value of X, 211X will be a perfect square?
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Select the odd word/letters/number/number pair from the given alternatives.
BD and CE are two medians of the triangle ABC. If EO = 7 cm, then the length of CE is
In an isosceles trapezium ______.
In figure, DE || BC. If DE = 3 cm, BC = 6 cm and area of ΔADE = 15 sq cm, then the area of ΔABC is
sin(A+B) - sin(A-B) is equal to