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Arithematic Progressions

The n^th term of an AP cannot be n² + 1. Justify your answer.

Arithematic Progressions

Divya deposited Rs 1000 at compound interest at the rate of 10% per annum. The amounts at the end of first year, second year, third year, …, form

Arithematic Progressions

 In the AP: 10, 5, 0, –5, … the common difference d is equal to 5. Justify whether the above statement is true or false.

Arithematic Progressions

The sum of first five multiples of 3 is

(A)  45 (B)  55 (C)  65 (D)  75

Arithematic Progressions

In an AP if a = 1, a_n = 20 and S_n = 399, then n is

(A) 19 (B)  21 (C)  38 (D)  42

Arithematic Progressions

The sum of first 16 terms of the AP: 10, 6, 2,… is

(A) –320 (B) 320 (C) –352 (D) –400

Arithematic Progressions

If the first term of an AP is –5 and the common difference is 2, then the sum of the first 6 terms is

(A)  0 (B)  5 (C)  6 (D)  15

Arithematic Progressions

The famous mathematician associated with finding the sum of the first 100 natu- ral numbers is

(A)  Pythagoras (B) Newton (C)  Gauss (D) Euclid

Arithematic Progressions

The 4^th term from the end of the AP: –11, –8, –5, …, 49 is

(A)  37 (B)  40 (C)  43 (D)  58

Arithematic Progressions

If 7 times the 7^th term of an AP is equal to 11 times its 11^th term, then its 18^th term will be

(A)  7 (B)   11 (C)  18 (D)  0