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If the sum of n terms of an A.P. is 3n2+5n, then which of its terms is 164?

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Important Questions on Arithmetic Progressions

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Modern's abc+ of Mathematics for Class 10>Chapter 5 - Arithmetic Progressions>FOR ASSESSMENT>Q 24
 If the sum of first n even natural numbers is equal to k times the sum of first n odd natural numbers, then k is:
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Modern's abc+ of Mathematics for Class 10>Chapter 5 - Arithmetic Progressions>FOR ASSESSMENT>Q 25
In an A.P., Sp=q, Sq=p and Sr denotes the sum of first r terms. Then Sp+q equals:
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Modern's abc+ of Mathematics for Class 10>Chapter 5 - Arithmetic Progressions>FOR ASSESSMENT>Q 26
If first term of an A.P. is 2 and the common difference is 4, then the sum of its 40 terms is:
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Modern's abc+ of Mathematics for Class 10>Chapter 5 - Arithmetic Progressions>FOR ASSESSMENT>Q 27
 The number of terms of the A.P. 3, 7, 11, 15,... is to be taken so that the sum is 406 is:
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Modern's abc+ of Mathematics for Class 10>Chapter 5 - Arithmetic Progressions>FOR ASSESSMENT>Q 28
The sum of first n odd natural numbers is
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Modern's abc+ of Mathematics for Class 10>Chapter 5 - Arithmetic Progressions>FOR ASSESSMENT>Q 29
The sum of first 20 odd natural numbers is:
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Modern's abc+ of Mathematics for Class 10>Chapter 5 - Arithmetic Progressions>FOR ASSESSMENT>Q 30
The common difference of the A.P. 12q, 1-2q2q, 1-4q2q..... is
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Modern's abc+ of Mathematics for Class 10>Chapter 5 - Arithmetic Progressions>FOR ASSESSMENT>Q 31
If k, 2k-1 and 2k+1 are three consecutive terms of an A.P., then the value of k is