Correct Answer  Option 1 : 625
Given:
PEN = 1225, NIB = ?
Letter

A

B

C

D

E

F

G

H

I

J

K

L

M

Position

1

2

3

4

5

6

7

8

9

10

11

12

13

Letter

Z

Y

X

W

V

U

T

S

R

Q

P

O

N

Position

26

25

24

23

22

21

20

19

18

17

16

15

14

PEN;
P = 16, E = 5, N = 14
Sum of all the alphabet's position = 16 + 5 + 14 = 35
Square of sum = (35)^{2} = 1225
Similarly,
NIB;
N = 14, I = 9, B = 2
Sum of all the alphabet's position = 14 + 9 + 2 = 25
Square of sum = (25)^{2} = 625
Hence, the answer is 625.