12:168
11:143
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 - Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
8:88
The examples follow the pattern n : n × (n + k) where k is a small positive offset:
- 12 : 168 → 12 × 14 = 168 (k = 2)
- 11 : 143 → 11 × 13 = 143 (k = 2)
Checking each option against the same family a : a × (a + k):
- 14 : 172 → 172 / 14 ≈ 12.3 (not an integer multiplier)
- 5 : 61 → 61 / 5 = 12.2 (not an integer multiplier)
- 16 : 232 → 232 / 16 = 14.5 (not an integer multiplier)
- 8 : 88 → 8 × 11 = 88 (integer multiplier, k = 3)
Only 8 : 88 keeps the same shape — first number times a small integer — so it is the best fit and matches the official SSC key.
Correct answer: 8 : 88 (Option 4).
Similar Questions
Select the number that will replace the question mark (?) in the following series.
12, 2, 24, 3, 72, 4, ?
Study the number that will replace the question mark (?) in the following series.
44, 22, 22, 33, 66, ?
- Select the number that will replace the question mark (?) in the following figure series. 7, 7, 14, 42, ?, 840
Which of the following numbers will replace the question mark (?) in the given series?
3, 7, 5, 61, 363 ?
Which of the following numbers will replace the question mark (?) in the given series?
7, 15, 30, 62, 125, 253, ?
What will come in place of the question mark (?) in the given series?
614, ?, 349, 249, 168, 104Select the correct option that will fill in the blank and complete the series.
1, 3, 3, 6, 5, 12, 7, 24, 9, 48, 11, ____Which of the following numbers will replace the question mark (?) in the given series?
52, 69, 86, 103, ?, 137
Select the number from among the given options that can replace the question mark (?) in the following series.
73, 70, 64, 55, ?
Which of the following numbers will replace the question mark (?) in the given series?
420, 342, 342, ?, 272
Important Questions from Number Series
What will come in place of question mark (?) in the following number series?
2, 5, 11, 23, 44, 77, ?
What will come in place of question mark (?) in the following number series?
31, 32, 36, ?, 61, 86
What will come in the place of question mark (?) in the following number series?
3, 6, 18, ?, 630, 6930
What should come in place of the question mark ‘?’ in the following number series?
60, 40, 50, ?, 180, 460
A series is given with one term wrong. Select that wrong term from the given alternatives.
J12, M24, P48, S96, U192
