## Bharat Gupta is teaching live on Unacademy Plus

SEQUENCE AND SERIES Class - 3 (Arithmetic Progression)

ARITHMETIC PROGRESSION nth term of an Arithmetic Progression d. = a commo n Sum of n term of an Arithmetic Progression 2. a f

3 + n 4 If the nth term of a series is , then the sum of 105 terms of the series is: a. 1470 b. 1360 C. 1530 d. none of these The number of terms in the series 20, 19,18 of which the sum is 300, is 3 a. 25, 36 b. 36, 31 c. 25 d. 36 The maximum sum of the series 20, 19, 18........ 3 3 a. 310 b. 290 c. 320 d. 300 a4.... a2K-1, a2K, are in A. P., and a aa-a2 + a2k-1-a k-m(uf-a k), then m, is equal to d. none of these 2k_1 2k+1 2k+1

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3 + n If the nth term of a series is, then the sum of 105 terms of the series is: 4 a. 1470 b. 1360 c. 1530 d. none of these

3 + n If the nth term of a series is, then the sum of 105 terms of the series is: 4 a. 1470 b. 1360 c. 1530 d. none of these ird Third 03 LA

+ a2-d +-+ If a1, , , a4, a2K-1, a2K, are in . ., and a-a a2k-1-a2k = m(a_a2k), then m' is equal to k-1 d. none of these a. D. 2k+1 2k+1 2k-1

a2k-1-a2k = m(a_a2k), then m' is equal to k-1 a. b. d. none of these 2k-1 2k+1 2k+1 2 @MJCa' _a.) ple3-a.) ( 3-4 )-~ a1A- ) G2a 1- .wdata.)

If a1, a2, a3,a4, a2K-1, a2K, are in A.P., and a1- + a2-a a2k-1-a2k = m(a_a2k), then m' is equal to + k-1 a. D. d. none of these 2k-1 2k+1 2k+1 2 K

The number of terms in the series 20, 19,18, . .. of which the sum is 300, is a. 25, 36 b. 36, 31 c. 25 d. 36

The maximum sum of the series 20, 193.183 a. 310 b. 290 . 320 d. 300

The maximum sum of the series 20, 193.183 a. 310 b. 290 . 320 d. 300 Smi" 20/ 19 , i3 3 3 3 2