Aptitude Odd Man Out and Series Test Paper 2

Answer: C

Explanation:

To get the next number in the given series go on subtracting prime numbers 19, 17, 13, 11, 7, and 5 from the numbers.
Like: 125 - 19 = 106
106 - 17 = 89
89 - 13 = 76
76 - 11 = 65
65 - 7 = 58
58 - 5 = 53

Answer: A

Explanation:

The sequence in the given series is

x 1 + 1² = 4 x 1 + 1² = 4+1 = 5,
x 2 + 2² = 5 x 2 + 2² = 10+4 = 14,
x 3 +3² = 14 x 3 + 3² = 42 + 9 = 51,
x 4 + 4² = 51 x 4 + 4² = 204 + 16 = 220

Therefore, the missing number is 220.

Answer: A

Explanation:

The given series is made of two different series:

First: 455, 465, 485, 515, and

Second: 445, 435, 415,455

The sequence in first series is + 10, + 20, + 30, and the sequence in second series: -10, -20. So, the number 455 is wrong as it should be 415 - 30 = 385

Answer: B

Explanation:

The given series is ÷ 2 + 4, ÷ 2+4,... Therefore the first series is as follows:

Answer: A

Explanation:

The given sequence is

X * 8 + 1 i.e., 2 * 8 +1 = 16 + 1 = 17
X * 7 + 2 i.e., 17 * 7 + 2 = 119 + 2 = 121
X * 6 + 3 i.e., 121 * 6 + 3 = 726 + 3 = 729...

Therefore: