17. What comes next?
A D I P ?
a. V
b. Y
c. A
d. Z
Position of A = 1
Position of D = 4
Position of I = 9
Position of P = 16
These are squares of 1, 2, 3, 4
So next has to be square of 5 = 25 = Y
18. What comes in place of question mark?
35Z34, 42U36 , 55P44, 64K48, ?
a. 72F50
b. 84G64
c. 73U36
d. 73F52
Here reverse positions are to be considered.
19. A14D L124X T206F ?
Which of the following will fit the above sequence?
a. O301H
b. N224X
c. Z268H
d. U211K
See the positions of alphabets
A=1; D=4 ; Middle number is 14
L=12; X=24; Middle Number is 124 (2 is common so written once)
T=20; F = 6=06; Middle Number is 206 (0 is common)
This condition is satisfied by only option d
U=21; K=11; Middle number is 211 (1 is common)
20. PN5, MJ10, IE17, ZU26, ?
a. SM33
b. TN37
c. JG40
d. TL50
This is satisfied by only option b.
A D I P ?
a. V
b. Y
c. A
d. Z
Answer: b. Y
Explanation:
Alphabets and their positions
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 |
Position of A = 1
Position of D = 4
Position of I = 9
Position of P = 16
These are squares of 1, 2, 3, 4
So next has to be square of 5 = 25 = Y
18. What comes in place of question mark?
35Z34, 42U36 , 55P44, 64K48, ?
a. 72F50
b. 84G64
c. 73U36
d. 73F52
Answer: d. 73F52
Explanation:
Alphabets and their positions and reverse positions
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 |
| 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
Here reverse positions are to be considered.
- 35-34 = 1. A has position 1.
But when reversed Z has position 1. - 42-36 = 6 ; 6 means 1+5
U has position 6 in reverse - 55-44 = 11 ; 11 means 6+5
P has position 11 in reverse - 64-48 = 16 ; 16 means 11+5
K has position 16 in reverse - Next difference has to be 16+5 = 21
21 is position of F in reverse
19. A14D L124X T206F ?
Which of the following will fit the above sequence?
a. O301H
b. N224X
c. Z268H
d. U211K
Answer: d. U211K
Explanation:
Alphabets and their positions
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 |
See the positions of alphabets
A=1; D=4 ; Middle number is 14
L=12; X=24; Middle Number is 124 (2 is common so written once)
T=20; F = 6=06; Middle Number is 206 (0 is common)
This condition is satisfied by only option d
U=21; K=11; Middle number is 211 (1 is common)
20. PN5, MJ10, IE17, ZU26, ?
a. SM33
b. TN37
c. JG40
d. TL50
Answer: b. TN37
Explanation:
Alphabets and their positions
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 |
| P=16; N=14 | M=13; J=10 | I=9; E=5 | Z=26; U=21 |
| 16-14 = 2 | 13-10=3 | 9-5=4 | 26-21=5 |
| 22+1=5 | 32+1=10 | 42+1=17 | 52+1=26 |
This is satisfied by only option b.
