Q.1 Find the missing number in the series: 2, 6, 12, 20, ?
28
30
32
36
Explanation - The series increases as 2+4=6, 6+6=12, 12+8=20, next is 20+10=30.
Correct answer is: 30
Q.2 If A=1, B=2, ..., Z=26, what is the sum of 'CAT'?
24
31
37
45
Explanation - C=3, A=1, T=20. Sum = 3+1+20=24.
Correct answer is: 24
Q.3 Find the missing letter: B, D, G, K, ?
N
O
P
M
Explanation - The positions in alphabet: B(2), D(4), G(7), K(11), next is 16th letter P.
Correct answer is: P
Q.4 Which number replaces the question mark? 3, 9, 27, 81, ?
162
243
324
108
Explanation - Each number is multiplied by 3: 3*3=9, 9*3=27, 27*3=81, 81*3=243.
Correct answer is: 243
Q.5 Find the missing number: 7, 14, 28, 56, ?
112
110
120
104
Explanation - Each number is multiplied by 2: 7*2=14, 14*2=28, 28*2=56, 56*2=112.
Correct answer is: 112
Q.6 Find the odd one out: 2, 3, 5, 7, 9, 11
2
5
7
9
Explanation - All are prime numbers except 9.
Correct answer is: 9
Q.7 If 'DOG' is coded as 7, 15, 4, then 'CAT' is coded as?
3, 1, 20
4, 1, 20
3, 2, 20
3, 1, 19
Explanation - Using the position in the alphabet: C=3, A=1, T=20.
Correct answer is: 3, 1, 20
Q.8 Find the missing number: 1, 4, 9, 16, 25, ?
30
36
35
32
Explanation - These are perfect squares: 1², 2², 3², 4², 5², next is 6²=36.
Correct answer is: 36
Q.9 Rearrange the letters to form a meaningful word: 'LAPPE'
APPLE
PEPAL
PLEAP
LEAPP
Explanation - Correct rearrangement is 'APPLE'.
Correct answer is: APPLE
Q.10 Find the missing letter: A, C, F, J, ?
O
N
P
M
Explanation - The positions increase by 1, 2, 3, 4,...: A(1), C(3), F(6), J(10), next is 15th letter O.
Correct answer is: O
Q.11 Which number comes next: 2, 6, 12, 20, 30, ?
36
42
40
48
Explanation - Difference between numbers: 4, 6, 8, 10, next difference=12; 30+12=42.
Correct answer is: 42
Q.12 Find the missing number: 5, 10, 20, 40, ?
70
80
100
90
Explanation - Each number is multiplied by 2: 5*2=10, 10*2=20, 20*2=40, 40*2=80.
Correct answer is: 80
Q.13 If 'SUN' = 65, then 'MOON' = ?
55
60
62
70
Explanation - Sum of letter positions: M=13,O=15,O=15,N=14. Sum=13+15+15+14=57.
Correct answer is: 62
Q.14 Find the odd one out: 13, 17, 19, 21, 23
13
17
19
21
Explanation - All are prime numbers except 21.
Correct answer is: 21
Q.15 Find the missing letter: Z, X, U, Q, ?
M
N
O
P
Explanation - Positions decrease by 2,3,4,...: Z(26), X(24), U(21), Q(17), next is 17-4=13 -> M.
Correct answer is: M
Q.16 Which number should come next? 1, 1, 2, 3, 5, 8, ?
11
12
13
15
Explanation - Fibonacci series: next=5+8=13.
Correct answer is: 13
Q.17 If 2+3=10, 3+4=21, 4+5=36, then 5+6=?
50
55
60
66
Explanation - Pattern: a+b = a*(b)+b, 2*3+2=10, 3*4+3=15? Actually pattern is (a+b)*a: (2+3)*2=10, (3+4)*3=21, (4+5)*4=36, (5+6)*5=55.
Correct answer is: 55
Q.18 Find the missing number: 1, 8, 27, 64, ?
100
125
81
121
Explanation - These are perfect cubes: 1³, 2³, 3³, 4³, next is 5³=125.
Correct answer is: 125
Q.19 Find the odd one out: 121, 144, 169, 182, 196
121
169
182
196
Explanation - All are perfect squares except 182.
Correct answer is: 182
Q.20 If 'RAIN' is coded as 18-1-9-14, what is the code for 'SNOW'?
19-14-15-23
18-14-15-23
19-13-15-23
20-14-15-23
Explanation - Using alphabet positions: S=19, N=14, O=15, W=23.
Correct answer is: 19-14-15-23
Q.21 Find the missing number: 2, 6, 12, 20, 30, 42, ?
54
56
60
64
Explanation - Differences: 4,6,8,10,12, next difference=14, 42+14=56.
Correct answer is: 56
Q.22 Which letter comes next in series? A, D, I, P, ?
Y
Z
X
W
Explanation - Positions: A(1²), D(2²), I(3²), P(4²), next 5²=25 -> Y.
Correct answer is: Y
Q.23 Find the missing number: 11, 21, 43, 87, ?
173
174
175
176
Explanation - Each number is approximately doubled and +1: 11*2-1=21, 21*2+1=43, 43*2+1=87, 87*2+1=175.
Correct answer is: 175
Q.24 Find the odd one out: 2, 3, 5, 7, 10, 11
10
5
7
3
Explanation - All are primes except 10.
Correct answer is: 10