On a certain principal if the Simple interest for two years is Rs 3000 and Compound interest for the two years is Rs 3225, what is the rate of Interest?
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The area of a circle is 616 sq cm, find its circumference?
If 1/2 is added to a number and the sum is multipled by 3, the result is 21. Then the number is
If a - b = 1 and ab = 6, then what is the value of a3- b3?
What is the value of tan 7π/6?
A train moves at the speed of 40 m/s and crosses a bridge of length 550 metres in 25 seconds. What is the length (in metres) of the train?
Manoj can do a piece of work in 42 hours. If he is joined by Jayashree who is 100% more efficient, in what time they will finish the work together?
∆ABC is right angled at B. BD is an altitude. AD = 4 cm and DC = 9 cm. What is the value of BD (in cm)?