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5.3 Q6 The first and the last term of an AP are 17 and 350 respectively. If the common difference is 9, ...........

32
5.3 Q7 Find the sum of first 22 terms of an AP in which d = 7 and 22nd term is 149.

33
5.3 Q8 Find the sum of first 51 terms of an AP whose second and third terms are 14 and 18 respectively.

34
5.3 Q9 If the sum of first 7 terms of an AP is 49 and that of 17 terms is 289, find the sum of first n terms.

35
5.3 Q10 Show that a1, a2 … , an , … form an AP where an is defined as below

36
5.3 Q11 If the sum of the first n terms of an AP is....

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5.3 Q12 Find the sum of first 40 positive integers divisible by 6.

38
5.3 Q13 Find the sum of first 15 multiples of 8.

39
5.3 Q14 Find the sum of the odd numbers between 0 and 50.

40
5.3 Q15 A contract on construction job specifies a penalty for delay of completion beyond a certain date as follows: Rs. 200 for the first ...........