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Find the average of first n natural numbers
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A gardener wanted to reward a girl for her good deeds by giving some apples. He gave 2 apples on the first day, 4 on the second day, 8 on the third day, 16 apples on the fourth day and so on for ten days. How many apples did she get from the gardener at the end of the tenth day
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Using the clay, Malar makes a cone, a hemisphere and a cylinder have equal bases and the heights of the cone and a cylinder are equal. They same as the common radius then find the ratio of their respective volumes
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Spherical metal ball of radius 6 cm is melted and casted into small spherical balls having diameter 6 mm. How many small balls can be casted
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The radii of two circular ends of a frustum shaped bucket are 15 cm and 8 cm. If its depth is 63 cm, find the capacity of the bucket in litres (Take $\pi=\dfrac{22}{7}$)
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The present age of A and B are in the ratio 4: 5 and after five years they will be in the ratio 5:6 then their sum of present age is
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If A and B can do a work in 6 days. B and C can do it in 12 days, C and A can do it in 4 days how many days it would take to finish the same work by all the three together?
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A and B can complete a work individually in 12 days and 18 days. They started doing the work together but after 4 days. A had to leave and B alone completed the remaining work. The whole work was completed in
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A function f:(-7,6) $\Rightarrow$ R is defined as follows 
what is the value of $\dfrac{4f(-3)-2f(4)}{f(-6)-4f(1)}$ ?
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Mala and Latha each had a number of bangles. Mala said to Latha “If you give me 4 of your bangles, my number will be thrice yours". Latha replied "If you give me 36, my number will be thrice yours". What is the total bangles together with them?
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