Two cyclists A and B start cycling at 21 km/hr and 24 km/hr towards each other. They meet after 1 hour and 12 minutes. How far (in km) were they from each other when they started?
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P and Q can do a project in 12 and 12 days respectively. In how many days can they complete 50% of the project if they work together?
Asif is twice as good as workman as Bashir and together they finish a piece of work in 30 days. In how many days will Asif alone finish the work?
A train crosses a 375 m long platform in 27 seconds. How long was the train if it was travelling at the speed of 70 kmph?
Mr. Rajesh buys a toy for Rs. 27.50 and sells it for Rs. 28.60. Find the gain %.
In a triangle PQR, PX, QY and RZ be altitudes intersecting at O. If PO = 6 cm, PX = 8 cm and QO = 4 cm, then what is the value (in cm) of QY?
Find out the odd word/letters/number/number pair from the given alternatives.
Sum of cubes of first n even natural numbers.
Proof of Sum of cubes of first n even natural numbers ::
Hence, in other words, the sum of the first n cubes is the square of the sum of the first n natural numbers.
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