Two chords AB and PQ of a circle intersect at D inside a circle. If AD = 4 cm, DB = 6 cm, QD = 3 cm, the length of PQ is equal to
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If O is the centroid and AD, BE and CF are the three medians of Δ ABC with an area of 96 cm2 then the area of Δ BOD in cm2 is
If a2b+c=b2C+a=a2a+b=1 then 11+a+11+b+11+c is
The average age of 30 boys in a class is 10 years. If the age of their teacher is also included, the average increases by one year. The teacher's age in years is
If Sinθ = √3/2 and 0°<θ<90°, then the value of tan(θ-15°) is
The difference between the largest and the smallest angles of a triangle whose angles are in the ratio of 5:3:10 is
The mid points of AB and AC of the Δ ABC are P and Q respectively. If PQ = 6 cm, then the side BC is
If a+1a=2 then the vealue of a5+1a5 will be
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