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RD Sharma - Mathematics

Exercise 9.1

Exercise 9.2

1 2 3 4 5 6 7 8 9 10 11 12

Exercise 9.3

1 2 A 2 B 2 C 2 D 2 E 3 A 3 B 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

Exercise 9.4

1 2 3 4 5 6 7 8

Exercise 9.5

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CCE - Formative Assessment

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Q. 23.5( 12 Votes )

Find the sum on n

Class 10th RD Sharma - Mathematics 9. Arithmetic Progressions

Answer :

S_n = [2a + (n – 1) d]

= [10 + (n – 1) -3]

= [13 – 3n]

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