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The pattern followed here is:

26 × 2 – 2 = 50

50 × 4 – 4 = 196

196 × 6 – 6 = 1170

1170 × 8 – 8 = 9352

Hence, the missing term is 1170.

The logic is:

142= 196

132= 169

122= 144

112= 121

102= 100

92= 81≠ 80

82= 64

Instead of 80, it should be 81.

Hence, ‘80’ is the correct answer.

The pattern followed here is:

8 + 3 = 11

11 × 2 = 22

22 + 11 = 33

33 × 2 = 66

66 + 33 = 99

Hence, ‘66’ is the correct answer.

The pattern followed here is:

196 ÷ 2 = 98

98 × 4 = 392

392 ÷ 2 = 196

196 × 4 = 784

784 ÷ 2 = 392

Hence, ‘392’ is the correct answer.

Checking options one by one:

1) cdbb /are/ aabb / cde/aabb / cde→ doesn't follow any pattern

2) dabb /bde/ aebb / cba/ aaac/ cde→ doesn't follow any pattern

3) aabb /cde / aabb / cde/ aabb / cde→follows apattern

4)abbb /dae / aacb / cde/aabb/ cde→ doesn't follow any pattern

Hence, "aacdabdebb" is the correct answer.

The pattern followed here is:

5× 1 = 5;

5× 3 = 15;

15× 5 = 75;

75× 7 = 525;

525× 9 = 4725

Hence 4725 is the correct answer.

The logic follows here is:

The given numbers are a pair of prime numbersandtheir preceding prime numbers.

1713 → 17 & 13 both are prime numbers.

1311→ 13 & 11 both are prime numbers.

117 → 11 & 7 both are prime numbers.

75 → 7 & 5 both are prime numbers.

And the series is decreasing in order.

So, the next number would be pair of 53.

53 → 5 & 3 both are the prime numbers.

Thus, the correct answer is "53".

the pattern follows here is;

5× 2 + 2 = 12

12× 2 - 2 = 22

22× 2 + 2 = 46

46× 2 - 2 = 90

90× 2 + 2 = 182

Hence, "182" is the correct answer.

The logic followed here is,

Sum of the cube of first number and square of second number i.e.,

I → 43 + 52 = 64 + 25 = 89

II → 73 + 32 = 343 + 9 = 352

Similarly, III → 53 + 72 = 125 + 49 = 174

Therefore, 174 is the correct answer.

The pattern followed here is:

7× 3 + 3 = 24,

24 × 3 + 3 = 75,

75 × 3 + 3 = 228,

228 × 3 + 3 = 687,

Hence, 687 is the correct answer.

Logic : To get the next term in the series add previous two terms.

The pattern followed here is :

1 + 1 = 2

2 + 1 + 1 = 4

4 + 2 + 1 = 7

7 + 4 + 2 = 13

13 + 7 + 4 = 24

24 + 13 + 7 = 44

44 + 24 + 13 = 81

Hence, '81' is the correct answer.

The logic followed here is:

Given series:46, 31, 22, 17, 30, -32, -89, -179

The series is in decreasing order but 30 is exceptionally greater than 17.

Thus 30 is the wrong term.

Hence, the correct answer is "30".

The logic is as:

81× 0.5 + 1 = 41.5

41.5× 1 + 1 = 42.5

42.5× 1.5 + 1 = 64.75

64.75× 2 + 1 = 130.50

130.50× 2.5 + 1 = 327.25

327.25× 3 + 1 = 982.75

Hence, the missing term is327.25.

The pattern followed here is:

24 + 13= 25

25 + 23= 33

33 + 33= 60

60 + 43=124

124 + 53= 249

Hence, the correct answer is 124.

The logic is as:

Square of prime numbers are added to the previous one to get the next number in the series.

141 + 22 = 145

145 + 32 = 154

154 + 52 = 179

179 + 72= 228

228 + 112 = 349

349 + 132 = 518

Hence, the missing number is518.

The pattern followed here is:

Reverse the number then add consecutive integers.

starting from 21

12 + 1 = 13 , reverse it,

31 + 2 = 33,

33 + 3 = 36,

63 + 4 = 67,

76 + 5 = 81,

18 + 6 = 24,

42 + 7 = 49,

94 + 8 =102,

Hence, 24will bethe correct answer.

The pattern followed here is:

First digit× 3 + 2 = Second digit, Second digit× 3 + 2 = Third digit, and so on.

So, 5× 3 + 2 = 17

17× 3 + 2 = 53

53× 3 + 2 = 161

161× 3 + 2 = 485

Hence, the correct answer is "161".

The given series:6, 11, 33, 65, 141, ?
It is an alternate series as shown below:

6× 2 - 1 = 11
11× 2 + 11 = 33
33​× 2 - 1 = 65
65​× 2 + 11 = 141
141​× 2 - 1 = 281

Hence, 281 will be the next term in the series.

a_cdeacdd_acdeea_ _deac_ _e

1) ceacce

Given sequence: a_cdeacdd_acdeea_ _deac_ _e

After filling the blanks with the letters/numbers in the options given above, we get:

accde / acdde / acdee / aacde / accee

No particular pattern is repeating itself when the sequence is divided into three equal parts.

2) aaaccd

Given sequence: a_cdeacdd_acdeea_ _deac_ _e

After filling the blanks with the letters/numbers in the options given above, we get:

aacde / acdda / acdee / aacde / accde

No particular pattern is repeating itself when the sequence is divided into three equal parts.

3) ceaccd

Given sequence: a_cdeacdd_acdeea_ _deac_ _e

After filling the blanks with the letters/numbers in the options given above, we get:

accde / acdde / acdee / aacde / accde

A particular pattern is repeating itself when the sequence is divided into three equal parts.

4) bbbcbd

Given sequence: a_cdeacdd_acdeea_ _deac_ _e

After filling the blanks with the letters/numbers in the options given above, we get:

abcde / acddb / acdee / abcde / acbde

No particular pattern is repeating itself when the sequence is divided into three equal parts.

Hence, ‘ceaccd’ is the correct answer.

The logic is:

62- 3 = 33

72+ 4 = 53

82- 3 = 61

92+ 4 = 85

102- 3 = 97

112+ 4 = 125

122 - 3 = 141

Hence, ‘125’ is the correct answer.

The logic is:

102- 1 = 99

92+ 1 = 82

82- 1 = 63

72+ 1 = 50

62- 1 = 35

52+ 1 = 26

Hence, ‘26’ is the correct answer.

The pattern followed:

The pattern are (alternate cube +1) and (alternate cube - 1)

13+ 1 = 2

23- 1 = 7

33+ 1 = 28

43- 1 = 63

53+ 1 = 126

63- 1 = 215

Hence, the correct answer is "215".