Question

Analyze the given series.

5, 13, 35, 73, 158

Which of the following numbers in the series is incorrect?

Answer 1

The "158" in the series is incorrect.

Step-by-step explanation:

The given series are

5, 13, 35, 73, 158

5 , 13 = 5 × 2 + $3^{1}$ = 10 + 3 = 13,

35 = 13 × 2 + $3^{2}$ = 26 + 9 = 35,

73 = 35 × 2 + $3^{1}$ = 70 + 3 = 73 and

158 = 73 × 2 + $3^{2}$ = 146 + 9 = 155 ≠ 158

The 158 in the series is incorrect.

Hence, the 158 in the series is incorrect.

Answer 2

Answer:

35

Step-by-step explanation:

(5 * 2) + (3 * 1) = 13 >>> 10 + 3 = 13

(13 * 2) + (3 * 2) = 32 >>> 26 + 6 = 32

(32 * 2) + (3 * 3) = 73 >>> 64 + 9 = 73

(73 * 2) + (3 * 4) = 158 >>> 146 + 12 = 158

Therefore, 35 is the incorrect number in the series. The number should be 32.