In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives.4 5 6 125 2 7 3 47 6 5 2 ?
65
This is a missing-number (matrix) problem: three numbers in each row combine by one consistent rule to yield the fourth number, and that rule must be discovered and reused.
Test multiplication of the first three entries plus a constant. Row 1: \(4 \times 5 \times 6 = 120\), and \(120 + 5 = 125\), which matches the fourth entry.
Confirm with Row 2: \(2 \times 7 \times 3 = 42\), and \(42 + 5 = 47\), which again matches.
So the rule is: fourth number = (product of the first three numbers) + 5, the same +5 appearing in both verified rows.
Apply to Row 3: \(6 \times 5 \times 2 = 60\).
Then add the constant: \(60 + 5 = 65\).
The key concept is finding one uniform product-plus-constant rule that fits every complete row before extending it. Hence the missing number is 65.
Similar Questions
In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives.
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4 7 2 112 5 3 8 240 6 4 ? 96
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 ? Study the given pattern carefully and select the number that can replace the question mark (?) in it.
116 160 ? 3 8 13 7 4 2 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
?
