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Let a, b, c, be in A.P. ,with a common difference d, then e^{1/e} , e^{b}^{/ae}, e^{1/a} are in
Sum to 20 terms of the series (1.3)^{2} + (2.5)^{2} + (3.7)^{2} +… is:
The sum of the series 3^{2} + 6^{2} + 9^{2} + … + (3n)^{2} is:
In how many different ways the letters of the word HEXAGON can be permuted?
The sum of the squares of the first 15 natural numbers is
Sum of squares of the first n natural numbers is given by:
The sum of the series 1^{3} – 2^{3} + 3^{3} – 4^{3} + ……. + 9^{3} is:
Sum to n terms of the series 2 + 5 + 14 + 41 +… is:
If 1, a and P are in A. P. and 1, g and P are in G. P., then
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83 videos237 docs99 tests
