Select the number that can replace the question mark [?] in the following series.15 8 39 20 9 47 25 10 ?
55
In each row: third number = first number + 3 × second number.
Row 1: 15 + 3 × 8 = 15 + 24 = 39.
Row 2: 20 + 3 × 9 = 20 + 27 = 47.
Row 3: 25 + 3 × 10 = 25 + 30 = 55.
Hence, the missing number is 55.
Important Questions from Missing Number in Matrix
Select the missing number from the given responses:
1
216
343
8
125
512
27
64
?
35
401
1575
Following is a matrix of certain entries. The entries follow a certain trend row-wise. Choose the missing entry (?) accordingly.
7B 10A 3C 3C 9B 6A 10A 13C ? Find the missing number from the given responses in the following question.
9 6 8 5 8 4 7 4 ? 11 2 7 In the following question, from the given alternatives, select the number that comes in place of the question mark (?).
16
8
13
17
12
23
21
15
19
162
105
?
In the following question, select the number that comes in place of the question mark (?) from the given options.
24 18 12 6 14 9 8 7 ? 72 116 48
