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Maths Crash Course - Live lectures + all videos + Real time Doubt solving!
Ex 5.3
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)
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
Last updated at Aug. 3, 2021 by Teachoo
Β
Maths Crash Course - Live lectures + all videos + Real time Doubt solving!
Ex 5.3, 1 Find the sum of the following APs. (i) 2, 7, 12 ,β¦., to 10 terms. 2, 7, 12,β¦., to 10 term s We know that Sum of AP = π/2 (2a + (n β 1) d) Here n = 10, a = 2, & d = 7 β 2 = 2 Putting these in formula , Sum = π/π (2a + (n β 1) d) = 10/2 (2 Γ 2 + (10 β 1) Γ 5) = 5(3 + 9 Γ 5) = 5 (4 + 45) = 5 (49) = 245