Q. If a₁, a₂, a₃…….. are in AP then if a₇ = 15, then the value of common difference that would make a₂ a₇ a₁₂ greatest is?

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Q. Let the sequence be 1×2, 3×2², 5×2³, 7×2⁴, 9×2⁵……… then this sequence is _________

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Q. Let the sequence be 1×2, 3×2², 5×2³, 7×2⁴, 9×2⁵……… then the next term of this AGP is given by _________

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Q. The sum of the first n natural numbers is given by _________

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Q. The sum of square of the first n natural numbers is given by _________

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Q. The sum of cubes of the first n natural numbers is given by _________

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Q. The series 1, 1, 1, 1, 1…….. is not an AGP.

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Q. If in an AGP the common ratio of GP is 1 then that sequence becomes an AP sequence.

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Q. The sequence 1, 1, 1, 1, 1…. is?

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Q. Which of the following is a Triangular number series?

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Q. Which of the following is a fibonacci series?

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Q. If a₁, a₂……… are in AP then a₁⁻¹, a₂⁻¹……… are in __________

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Q. The ninth term of 1⁄3, 1⁄7, 1⁄11, 1⁄15, 1⁄19,……… is given by?

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Q. If for some number a and d, if first term is 1⁄a, second term is 1/(a+d), thrid term is 1/(a+2d) and so on, then 5th term of the sequence is?

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Q. If a, b, c are in hp then a⁻¹, b⁻¹, c⁻¹ are in _________

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Q. If a, b, c are in hp, then b is related with a and c as _________

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Q. For number A, C if H is harmonic mean, G is geometric mean then H>=G.

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Q. For number B, C if H is harmonic mean, A is the airthmetic mean then H>=A.

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Q. Which of the following gives the right inequality for AM, GM, HM?

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Q. For two number a,b HM between them is given by?

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