Q1)-Choose the correct alternative for that will follow the same pattern 20 , 19 , 17 , ? , 5
12
13
14
15
Ans.- C The Pattern is - 1, - 2,... Missing number = 17 - 3 = 14.
Q2)-2, 44 ,4 ,41, 6 ,38, 8,?
10, 12
35 ,32
35 ,10
10 , 52
Ans.- C Here, there are two alternating patterns, one addition and one subtraction. The first starts with 2 and increases by 2; the second starts with 44 and decreases by 3.
Q3)-2, 3, 5, 7, 11, ?, 17
12
13
14
15
Ans.- B Clearly, the given series consists of prime numbers starting from 2. The prime number after 11 is 13. So, 13 is the missing number.
Q4)-17 ,14 ,14 ,11 ,11 ,8 ,8, ?
8 , 5
5 , 2
2 , 5
5 , 5
Ans.- D In this simple subtraction with repetition series, each number is repeated, then 3 is subtracted to give the next number, which is then repeated, and so on.
Q5)-1, 6, 26,?, 426.
86
76
106
96
Ans.- C Here the difference between the consecutive terms is multiplied by 4. The difference of the two consecutive numbers is 5, 20, ..... 5 × 4 = 20 20 × 4 = 80 26 + 80 = 106.
Q6)-2, 10, 40, 120,?
240
360
470
210
Ans.- A Here the series is a multiplication series. The order of the multiplication is ×5, ×4, ×3, ×2 120 × 2 = 240
Q7)-1000, 200, 40, ?
10
8
9
12
Ans.- B This is a simple division series. Each number is divided by 5. Rule = (1st number / 5 = 2nd number) (2nd number / 5 = 3rd number).... Now, (1000 / 5 = 200), (200 / 5 = 40), (40 / 5 = 8)... So answer is a = 8.
Q8)-2, 10, 26, 50, ?, 122.
82
90
80
62
Ans.- A
Q9)-14, 28, 20, 40, 32, 64, ?
52
56
86
98
Ans.- B This is an alternating multiplication and subtracting series: First, multiply by 2 and then subtract 8. Rule = (1st no.) (1st x 2 = 2nd no.) (2nd - 8 = 3rd no.) (3rd x 2 = 4th no.).... Now (14) (14 x 2 = 28) (28 - 8 = 20) (20 x 2 = 40) (40 - 8 = 32) (32 x 2 = 64) (64 - 8 = 56)... So the answer is b = 56.
Q10)-3, 4, 7, 8, 11, 12,?
7
10
15
20
Ans.- C This alternating addition series begins with 3; then 1 is added to give 4; then 3 is added to give 7; then 1 is added, and so on. Rule = (first number + 1) (second number + 3) (third number + 1) (fourth number + 3)... Now The series is 3, 4, 7, 8, 11, 12... (3 + 1 = 4), (4 + 3 = 7), (7 + 1 = 8), (8 + 3 = 11), (11 + 1 = 12) (12 + 3 = 15)... So the answer is d = 15.
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