Question

8, 9, 15.5, 34, 89, ? ​

Answer 1

Answer:

155.5

Step-by-step explanation:

8+9+15.5+34+89=155.5

Answer 2

The next number in the sequence is 272.

8, 9, 15.5, 34, 89, 272

Step-by-step explanation:

Given:

8, 9, 15.5, 34, 89, ? ​

To find:

The next number in the series

Solution:

The numeric sequence was given, In this sequence was arranged as multiplication and addition of 1, 1.5, 2, 2.5, 3.

The arrived answers thus added with (0, 0.5 ,1 ,1.5 ,2)

From the given sequence 8⇒9⇒15.5⇒34⇒89⇒?

8 ⇒(8×1)+1

  ⇒9+0=9

9 ⇒(9×1.5)+1.5

  ⇒13.5+1.5

  ⇒15+0.5=15.5

15.5⇒(15.5×2)+2

   ⇒31+2

   ⇒33+1=34

34⇒(34×2.5)+2.5

   ⇒85+2.5

   ⇒87.5+1.5

   ⇒89

89⇒(89×3)+3

   ⇒267+3

   ⇒270+2

    ⇒272

Hence,

The next number in the sequence is 272.