In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives.4 5 2 40 2 7 ? 70 5 4 3 60
5
This is a missing-number (matrix) problem where the fourth entry of each row is built from the first three by a single fixed operation.
Try the plain product of the three known numbers. Row 1: \(4 \times 5 \times 2 = 40\), which equals the fourth entry exactly.
Check Row 3: \(5 \times 4 \times 3 = 60\), which also equals its fourth entry.
So the confirmed rule is simply: fourth number = product of the first three numbers, with no added constant.
Apply to Row 2, where the third number is unknown: \(2 \times 7 \times ? = 70\).
Simplify: \(14 \times ? = 70\), so \(? = 70 \div 14 = 5\).
The key concept is validating one operation on the fully known rows and then solving for the gap. Hence the missing number is 5.
Similar Questions
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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
?
