Question

21.
Which of the following alternatives will fit in place of ,M"?
L6, 08, R11, M, X25, A42, D75
(a) U15
(b) U16
(c) W14​

Answer 1

Answer:

(b) U16 is right answer of the question.

Answer 2

Answer:

U16

Step-by-step explanation:

In alphabetical series :-

By using logic (Previous alphabet + 3)

L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, A, B, C, D

So, the missing alphabet is U.

In number series :-

By taking difference :-

8-6 = 2

11-8 = 3

M-11 = (M-11)

25-M = (25-M)

42-25 = 17

75-42 = 33

By using logic (Previous difference × 2 - 2) :-

2×2-1 = 3

3×2-1 = 5 = (M-11)

5×2-1 = 9 = (25-M)

9×2-1 = 17

17×2-1 = 33

Now,  

(M-11) = 5

M = 5+11

M = 16 ---.1

And,

25-M = 9

25-9 = M

16 = M ---.2

Because .1 and .2 are equal, so, M = 16

Combining Alphabetical and numeric series :-

M = U and M = 16

M = U16