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[" 1.The sum of the first five terms of ...

[" 1.The sum of the first five terms of an AP and "],[" the sum of the first five terms of an AP and "],[" the sum of the first seven terms of the same "],[" AP is "167." If the sum of the first ten terms of "],[" this "167." If the sum of the first ten terms of "],[" this "AP" is "235" ,find the sum of its first twenty "],[" terms."]

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The sum of the first five terms of an A.P. and the sum of the first seven terms of the same A.P. is 167. If the sum of first 10 terms of this A.P. is 235, find the sum of its first twenty terms.

The sum of the first five terms of an AP and the sum of the first seven terms of theits first twenty terms.same AP is 167. If the sum of the first ten terms of this AP is 235, find the sum of first twenty terms

The sum of the first five terms of an AP and the sum of the first seven terms of the same AP is 167. If the sum first ten terms of this AP is 235, find the sum of its first twenty terms.

The sum of the first five terms of an AP and the sum of the first seven terms of the same AP is 167. If the sum first ten terms of this AP is 235, find the sum of its first twenty terms.

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If the sum of the first 9 terms of an AP is equal to the sum of its first 11 terms, then find the sum of its first 20 terms.

If the sum of first p terms of an A.P. is equal to the sum of the first q terms, then find the sum of the first (p + q) terms.