In a class of 66 students there are 33 girls. The average weight of these girls is 61 Kg and average weight of the full class is 66 kgs. What is the average weight of the boys of the class?
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If cos3A = X, then value of X?
The bus fare between two cities is increased in the ratio 17:20. Find the increase in the fare, if the original fare is Rs. 425
Given: 5x -3(2x-7) > 3x - 1 < 7 + 4x; then x can take which of the following values?
Coefficient of x2 in (x + 9)(6 - 4x)(4x - 7) is
What is the area of the sector whose central angle is 90° and radius of the circle is 14 cm?
A student multiplied a number by 3/10 instead of 10/3. What is the percentage error in the calculation?
Curved surface area of a cylinder is 1232 sq cm. If circumference of its base is 154 cm, then what will be the height of the cylinder? (Take π = 22/7)
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