In an examination, 10 questions of true-...

In an examination, 10 questions of true-false type are asked. A student tosses a fair coin to determinehis answer to each question. If the coin falls heads, he answers "true" and if it falls Lails, he answers "false "Show that the probability that he answers at most correctly 7 questions is `121/128`.

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MODERN PUBLICATION-PROBABILITY-MOCK TEST SECTION D

In an examination, 10 questions of true-false type are asked. A studen...
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If A=[{:(1,0,2),(0,2,1),(2,0,3):}] and A^(3)-6A^(2)+7A+kI(3)=O, find k...
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Q. |(x+y,x,x),(15x+4y,4x,2x),(10x +8y,8x,3x)|=x^3
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Draw a rough sketch of the curves y^2 = x + 1 and y^2 =-x+1 and find t...
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A water tank has the shape of an inverted right-circular cone with its...
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A square piece of tin of side 24 cm is to be made into a box without t...
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Find the distance of the point (2,3,4) from the plane 3x+2y+2z+5=0 mea...
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