Question

Find the next term in the series 10,19,40,77,158?

Answer 1

I THINK 311 IS ANSWER BECAUSE 10 X 2 =20-1= 19, 19 X 2=38+2=40,40 X 2=80-3=77, 77 X 2=154 +4=158, 158 X 2=316-5=311.

Answer 2

The missing term is equal to "311".

Step-by-step explanation:

The given sequence are:

10, 19, 40, 77, 158, ?

To find the next term =

The pattern follow,

$\times 2-1,\times 2+2,\times 2-3,\times 2+4,\times 2-5,..$

19 = 10 × 2 - 1 = 20 - 1 = 19

40 = 19 × 2 + 2 = 38 + 2 = 40

77 = 40 × 2 - 3 = 80 - 3 = 77

158 = 77 × 2 + 7 = 154 + 4 = 158

Similarly,

? = 158 × 2 - 5 = 316 - 5 = 311

Hence, the missing term is equal to "311".