BANK & INSURANCE (MISSING NUMBER SERIES PART 1)

Total Questions: 50

11. 71, 94, ?, 155, 193, 236

Correct Answer: (d) 122
Solution:Find first differences: 94 − 71 = 23

? − 94 = d₂

155 − ? = d₃

193 − 155 = 38

236 − 193 = 43

Observe last two differences: 38 → 43 (increase = +5)

So differences increase by +5 each step.

Therefore differences should be: 23, 28, 33, 38, 43

Now find missing number: 94 + 28 = 122

Check: 122 + 33 = 155 

12. 4.5, 10, 21, ?, 87, 175

Correct Answer: (a) 43
Solution:Pattern: ×2 +1 ⇒ 21×2+1=43.

13. 80, 141, ?, 193, 209, 222

Correct Answer: 154
Solution:Let's analyze:

80 + 61 = 141

141 + 13 = 154

154 + 39 = 193

193 + 16 = 209

209 + 13 = 222

Looks like an alternating pattern: +61, +13, +39, +16, +13

So, the missing number is: 154

14. 216, 72, ?, 12, 6

Correct Answer: (c) 36
Solution:Alternate ÷3, ÷2 ⇒ 72 ÷2 = 36.

15. 102, 108, 120, 138, ?, 192

Correct Answer: (b) 162
Solution:Differences: +6, +12, +18, +24, +30 ⇒ missing = 138+24=162.

16. 36, 50, 22, 64, ?, 78

Correct Answer: (c) 8
Solution:

Add/subtract multiples of 14: +14, −28, +42, −56, +70 ⇒ missing = 64−56=8.

17. 500, 499, 507, 480, 544, ?, 635

Correct Answer: (d) 419
Solution:Add/subtract cubes: −1^3, +2^3, −3^3, +4^3, −5^3, +6^3 ⇒ missing = 544−125=419.

18. 4, 3, 4.5, 8.75, ?, 26.5

Correct Answer: (a) 16
Solution:First differences:

3 − 4 = −1

4.5 − 3 = 1.5

8.75 − 4.5 = 4.25

Second differences:

1.5 − (−1) = 2.5

4.25 − 1.5 = 2.75

Pattern: increases by +0.25 each time

Next values → 3 and 3.25

So next first difference:

4.25 + 3 = 7.25

Missing term:

8.75 + 7.25 = 16

Check:

Next difference = 7.25 + 3.25 = 10.5

16 + 10.5 = 26.5 ✔

19. 300, 299, 295, 286, 270, ?

Correct Answer: (b) 245
Solution:Subtract squares: −1, −4, −9, −16, −25 ⇒ 270−25=245.

20. 120, 481, ?, 1929, 3016

Correct Answer: (c) 1084
Solution:11² - 1 = 120

22² - 3 = 481

33² - 5 = 1084

44² - 7 = 1929

55² - 9 = 3016

So, the missing number is indeed: 1084