A kite is flying at a height of 50m. If the length of string is 100 m then the inclination of string to the horizontal ground in degree measures is
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P can do a piece of work in 60 days & Q can do the same work in 50 days. Find the ratio of working efficiencies of P to Q.
10 persons can do a job in X days. If 20 persons with twice the efficiency can do the same job in 5 days, then find the value of X?
The mean of a distribution is 18 and the standard deviation is 4.5. What is the value of the coefficient of variation?
Triangle PQR is such that PQ = 9 cm, QR = 6 cm, PR = 7.5 cm and triangle PQR is similar to triangle XYZ. If XY = 18 cm, find the value of YZ.
Due to an acceleration of 1 m/s2 the velocity of a body increases from 15 m/s to 20 m/s in a certain period. Find the displacement (in m) of the body in that period.
ΔUVW is right angled at V. If sinU = 24/25, then what is the value of cosW ?
Find the volume (in cm³) of a cube of side 4.5 cm.
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