Question

37. 64, 36, 22, 15,?, 9.75
(1) 11.75 (2) 12.5
(3) 11.5
(4) 12.25
(5) इनमें से कोई नहीं​

Answer 1

Answer:

option b 12.5 is the right answer

Answer 2

Given:

64, 36, 22, 15,? , 9.75

To find:

The missing term

Solution:

The required term is 11.5. (Option 3)

We can obtain the term by subtracting half the difference between the last two terms from the following term.

Let the missing term be X.

The sequence becomes-

64, 36, 22, 15, X, 9.75

Now, we see the following.

64-36=28

We will subtract half of this difference from the second term.

36-28/2=36-14=22

Similarly, 22-14/2=22-7=15.

Now, 15-7/2=X

15-3.5=X

11.5=X

11.5-3.5/2=11.5-1.75=9.75

So, the missing term is 11.5.

Therefore, the required term is 11.5.