MEDIUM
11th CBSE
IMPORTANT
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Find the sum of all those integers between 100 and 800 each of which are divisible by 16 leaves the remainder 7.

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Important Questions on Arithmetic Progressions

MEDIUM
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 19 - Arithmetic Progressions>EXERCISE 19.4>Q 14
Solve: 25+22+19+16+...+x=115
MEDIUM
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 19 - Arithmetic Progressions>EXERCISE 19.4>Q 14

Solve: 1+4+7+10+...+x=590.

MEDIUM
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 19 - Arithmetic Progressions>EXERCISE 19.4>Q 15
Find the rth term of an A.P. the sum of whose first n terms is 3n2+2n.
MEDIUM
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 19 - Arithmetic Progressions>EXERCISE 19.4>Q 16
How many terms are there in the A.P. whose first and fifth terms are -14 and 2 respectively and the sum of the terms is 40?
MEDIUM
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 19 - Arithmetic Progressions>EXERCISE 19.4>Q 17
The sum of first 7 terms of an A.P. is 10 and that of next 7 terms is 17 . Find the progression.
MEDIUM
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 19 - Arithmetic Progressions>EXERCISE 19.4>Q 18
The third term of an A.P. is 7 and the seventh term exceeds three times the third term by 2. Find the first term, the common difference and the sum of first 20 terms.
MEDIUM
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 19 - Arithmetic Progressions>EXERCISE 19.4>Q 19
The first term of an A.P. is 2 and the last term is 50. The sum of all these terms is 442. Find the common difference.
HARD
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 19 - Arithmetic Progressions>EXERCISE 19.4>Q 20
The number of terms of an A.P. is even; the sum of odd terms is 24, of the even term is 30, and the last term exceeds the first by 1012, find the number of terms and the series.