Ex 5.3

Ex 5.3, 1 (i)

Ex 5.3, 1 (ii)

Ex 5.3, 1 (iii) Important

Ex 5.3, 1 (iv)

Ex 5.3, 2 (i)

Ex 5.3, 2 (ii) You are here

Ex 5.3, 2 (iii) Important

Ex 5.3, 3 (i)

Ex 5.3, 3 (ii)

Ex 5.3, 3 (iii)

Ex 5.3, 3 (iv) Important

Ex 5.3, 3 (v)

Ex 5.3, 3 (vi) Important

Ex 5.3, 3 (vii)

Ex 5.3, 3 (viii) Important

Ex 5.3, 3 (ix)

Ex 5.3, 3 (x)

Ex 5.3, 4

Ex 5.3, 5

Ex 5.3, 6 Important

Ex 5.3, 7

Ex 5.3, 8

Ex 5.3, 9

Ex 5.3, 10 (i)

Ex 5.3, 10 (ii) Important

Ex 5.3, 11 Important

Ex 5.3, 12

Ex 5.3, 13

Ex 5.3, 14 Important

Ex 5.3, 15

Ex 5.3, 16 Important

Ex 5.3, 17

Ex 5.3, 18 Important

Ex 5.3, 19 Important

Ex 5.3, 20 Important

Chapter 5 Class 10 Arithmetic Progressions

Serial order wise

Last updated at April 16, 2024 by Teachoo

Ex 5.3, 2 Find the sums given below (ii) 34 + 32 + 30 + ……….. + 10 34 + 32 + 30 + ……….. + 10 Here, a = 34 d = 32 – 34 = –2 Also, Last term = 𝒍 = 10 To find sum, first we need to find n Using formula an = a + (n − 1)d Putting a = 34, d = −2, an = 10 in the formula 10 = 34 + (n − 1) × −2 10 − 34 = (n − 1) × −2 −24 = (n − 1) × −2 (−24)/(−2) = (n − 1) 12 = n − 1 n = 12 + 1 n = 13 For sum, we use the formula S = 𝒏/𝟐 (𝒂+𝒍) Putting a = 34, n = 13, l = 10 S13 = 13/2 (34+10) S13 = 13/2 (44) S13 = 286