Question

find incorrect no. from following
5,27,61, 122,213, 340,509​

Answer 1

Answer:

27 is incorrect number

Tₙ = (n + 1)³ - 3

Step-by-step explanation:

5,27,61, 122,213, 340,509​

5 = 2³ - 3  = 8 - 3 = 5

27 = 3³ - 3 = 27 - 3 = 24 ≠ 27

61 = 4³ - 3 = 64 - 3 = 51

122 = 5³ - 3  = 125 - 3 = 122

213 = 6³ - 3 = 216 - 3 = 213

340 = 7³ - 3 = 343 - 3 = 340

509 = 8³ -3 = 512 - 3 = 509

27 is incorrect Number

as it should have been 24

Series here

is nth Number = (n+1)³ - 3

Tₙ = (n + 1)³ - 3