Please solve question no. 15

Please solve question no. 15 1. Write down the first five terms of each of the following sequences, whose general ten-ns (ii) an = 5" •l 2. Determine k so that —, k and —k are the three consecutive terms of an A.P. 3. Find the 27th and the nth terms of sequences 5, 2, — 1, . 4. Which term or the A.P. 5, 13, ......is 181? 5. Find the sum of first 10 terms of the arithmetic progression — 0.5, — 1.0, --1.5. 6. Find the sum Of n terms of the sequence {an} where an = 5—6n, ne N. 7. Find k, if the given value of x is the k"' term of the given A.P. (i) 25, SO, 75, 100.... 8. Show that a —h, a and a-Eb form consecutive terms of an A.P. 3. The 7th term of an A.P. is —4 and its 13th term is — 16. Find the A.P. . will be 84 more tha w. Which term of the Arithmetic progression 3, 10, 17.. 11. Ifthe sum of first n terms of an A.P. is given by Sn = 3n2 + 2n, find the nthterm 12. If m times the mm term of an A.P.is equal to ntimes its nth term, find its(m + n)'h t 13 How many terms of the A.P. 3, 5, ....must be taken so that the sum is 120? . Find 10th term from end of the A.P. 4, 9, 14, ... 15 Find the sum of all two digits odd positive number. 16. Find the sum of all the natural numbers les than 100 which are divisible by 6. LJZfihe first term, common difference and last term of an A.P.are 12, 6 and 252 re sum of all terms of this A.P. 18. If m times the mth term of an A.P. is equal to n times its nth term, prove that th A.P.is zero. 19. For an A.P., show thattp+t 2 q 2 20. Which term of the progression . , ...........is the first negative term. 5 21. Ifthe pth,qth,rthterm of an A.P.be x,y,z.respectively, show that -r)+ y -II 22. How many terms of the A.P. ..... ........areneeded to give the double answer. h3, Find the middle term (s) in the A.P. 20,16,12 Three positive • ers are in AP such that a, +4 +4 = 33 and a. inte 4, is — and the s; ..........,254, GRADE X IVIanavRachna Internanor.an Sector 46, Gurgaon Session 2018-19 SUBJECT — MATHEMATICS PRACTICE ASSIGNMENT- ARITHMETIC PROGRESSIO