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10th CBSE
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If the common difference of an AP is 5, then what is a18−a13?

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Important Questions on Arithmetic Progressions

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10th CBSE
IMPORTANT
NCERT EXEMPLAR PROBLEMS-SOLUTIONS MATHEMATICS>Chapter 5 - Arithmetic Progressions>Exercise>Q 10
What is the common difference of an AP in which a18−a14=32?
MEDIUM
10th CBSE
IMPORTANT
NCERT EXEMPLAR PROBLEMS-SOLUTIONS MATHEMATICS>Chapter 5 - Arithmetic Progressions>Exercise>Q 11
Two arithmetic progressions have the same common difference. The first term of one is -1 and that of the other is -8. The difference between their 4th terms is 
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10th CBSE
IMPORTANT
NCERT EXEMPLAR PROBLEMS-SOLUTIONS MATHEMATICS>Chapter 5 - Arithmetic Progressions>Exercise>Q 12
If 7 times the 7th term of an A.P. is equal to 11 times its 11th term, then its 18th term will be 
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10th CBSE
IMPORTANT
NCERT EXEMPLAR PROBLEMS-SOLUTIONS MATHEMATICS>Chapter 5 - Arithmetic Progressions>Exercise>Q 13
The 4th term from the end of an A.P., -11, -8, -5, ..., 49 is
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10th CBSE
IMPORTANT
NCERT EXEMPLAR PROBLEMS-SOLUTIONS MATHEMATICS>Chapter 5 - Arithmetic Progressions>Exercise>Q 14
The famous mathematician associated with finding the sum of the first 100 natural numbers is 
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10th CBSE
IMPORTANT
NCERT EXEMPLAR PROBLEMS-SOLUTIONS MATHEMATICS>Chapter 5 - Arithmetic Progressions>Exercise>Q 15
If the first term of an AP is -5 and the common difference is 2, then the sum of the first 6 terms is 
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10th CBSE
IMPORTANT
NCERT EXEMPLAR PROBLEMS-SOLUTIONS MATHEMATICS>Chapter 5 - Arithmetic Progressions>Exercise>Q 16
The sum of first 16 terms of the A.P., 10, 6, 2,.... is
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10th CBSE
IMPORTANT
NCERT EXEMPLAR PROBLEMS-SOLUTIONS MATHEMATICS>Chapter 5 - Arithmetic Progressions>Exercise>Q 17
In an AP, if a=1, an=20 and Sn=399, then n is equal to