Number Series Logical Reasoning Questions and Answers Part 5

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

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

Answer is option d where 73-52 = 21

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)

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.