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SEQUENCE AND SERIES Class 4 (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

If the sum of the first n even natural numbers is equal to k times the sum of first n odd natural numbers, then k is equal to a. n+1 b. 2-1 C. n+1 d. 2n A man arranges to pay off a debt of Rs. 3600 by 40 annual instalments which are in A.P. When 30 of the instalments are paid he dies leaving one third of the debt unpaid. The value of the 8th instalment is a. Rs. 35 b. Rs.50 c. Rs.65 d. None of these If the ratio of the sum p terms and q terms of an AP. is 2p2; 3g? , then the ratio of its 10th and 15th terms is , 2 : 3 b. 9 14 . 38:87 d. 57: 58 If the ratio of the sum m terms and n terms of an A.P. is m2; n, then the ratio of its mth and nth terms is b. (m-1) (n-1) c. (2m-1): (2n-1) d. none of these

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If the sum of the first n even natural numbers is equal to k times the sum of first n odd natural numbers, then k is equal to b. 2-1 n+1 2n n+1 d. a. C.

If the sum of the first n even natural numbers is equal to k times the sum of first n odd natural numbers, then k is equal to b. 2-1 n+1 2n n+1 d. a. Sum a n even 2n2 2n

A man arranges to pay off a debt of Rs. 3600 by 40 annual instalments which are in . . When 30 of the instalments are paid he dies leaving one third of the debt unpaid. The value of the 8th instalment is a. Rs. 35 b. Rs.50 c. Rs.65 d. None of these

A man arranges to pay off a debt of Rs. 3600 by 40 annual instalments which are in . . When 30 of the instalments are paid he dies leaving one third of the debt unpaid. The value of the 8th instalment is a. Rs. 35 b. Rs.50 c. Rs.65 d. None of these 3

A man arranges to pay off a debt of Rs. 3600 by 40 annual instalments which are in . . When 30 of the instalments are paid he dies leaving one third of the debt unpaid. The value of the 8th instalment is a. Rs. 35 b. Rs.50 c. Rs.65 d. None of these -( 6 S loda 20

If the ratio of the sum p terms and q terms of an A.P. is 2p2: 3q2, then the ratio of its 10th and 15th terms is . 2 : 3 b. 9 14 c. 38:87 d. 57 58

If the ratio of the sum p terms and q terms of an A.P. is 2p2: 3q2, then the ratio of its 10th and 15th terms is . 2 : 3 b. 9 14 c. 38: 87 d. 57: 58 common - to :- and S

If the ratio of the sum m terms and n terms of an A.P. is m2 n2, then the ratio of its mth and nth terms is c. (2m-1) (2n-1) d. none of these Tn