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Let the required number = (LCM of denominator 4 and 5) = 20 According to the question, Wrong answer = 4/5 times; 20 = 16 Correct answer = 5/4 times; 20 = 25 Required percentage of error = [(25-16)/ 25] times; 100 = 36%
A solid metallic sphere of radius 15 cm is melted and recast into spherical balls of radius 3 cm each. What is the ratio of the surface area of the orig...
If x = 19 , find x 5 - 20 x 4 + 20 x 3 - 20x 2 + 20x - 20 = ?
The curved surface area of a cylinder is 462 cm² and its base area is 346.5 cm². What is the volume (in cm³) of the cylinder? (Use π =...
If a + b + c + d = 4, then the value of
(408 × 680)÷(20% of 680) = (250 × 260)÷ 10 + ? – 4500
If x + y = 2 and 1/x + 1/y = 18/15, then find the value of (x3 + y3)?
If x =7+4√3. then find the value of x +1/ x
If x = 8.15, y = 9.06 and z = –17.21, then the value of x³ + y³ + z³ – 3xyz is:
If x, y and z are real numbers such that (x-5)2+(y-7)2+(z-9)2= 0 then (x+y+z) is equal to
