The first three numbers in a series are

The first three numbers in a series are –3, 0, 3, the 10th number in the series will be —

According to question,
a = –3, d = 0 - ( - 3 ) = 3 - 0 = 3
∴ T_n = a + (n – 1).d
T₁₀ = a + (10 – 1).d
∴ T₁₀ = –3 + 9 × 3 = 24