Q2 of 105 Page 139

Find the
11^thterm of the A.P. : -3, , 2, …

Given

First term (a) = -3

Common difference (d) = 2^nd – 1^st terms

d = -3 – = 2.5

we need to find the 11^th term

we know that a_n = a + (n-1)d

so here, n = 11

a₁₁ = -3 + (11-1) (2.5)

a₁₁ = 22

Fill in the blanks in the following table, given that a is the first term, d the common difference and the nth term of the AP:

Find the

30^thterm of the A.P. 10, 7, 4 ……

Find the respective terms for the following APs.

a₁ = 2, a₃ = 26, find a₂

Find the respective terms for the following APs.

a₂ = 13, a₄ = 3, find a₁, a₃

Questions · 105

6. Progressions

1 1 1 1 2 2 2 2 2 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 4 1 2 2 3 3 3 3 3 4 5 5 6 7 8 9 10 11 12 13 14 15 16 17 1 1 1 1 2 2 2 3 3 3 3 3 3 3 4 5 6 7 7 8 9 10 11 12 13 14 1 1 1 2 2 2 2 3 3 3 3 3 3 3 3 3 4 1 1 1 1 2 3 3 4 4 4 5 6 7

Find the11thterm of the A.P. : -3, , 2, …