Question

Select the number from among the given options that can replace the question mark (?) in the following table.

90	80	120
5	4	6
7	6	10
25	?	30

1. 23
2. 55
3. 26
4. 25

Answer 1

Correct Answer - Option 3 : 26

The logic is:

Column 1: 90 - [(5 × 7) + 25] 

= 90 - [35 + 25]

= 90 - 60

= 30

Column 3: 120 - [(6 × 10) + 30]

= 120 - [60 + 30]

= 120 - 90

= 30

Similarly,

Let the missing number in Column 2 be 'a'.

80 - [(4 × 6) + a] = 30

⇒ 80 - [24 + a] = 30

⇒ 80 - 30 = 24 + a

⇒ 50 = 24 + a

⇒ 50 - 24 = a

⇒ 26 = a

Hence, ‘26’ is the correct answer.