Question : Directions: Study the given pattern carefully and select the number that can replace the question mark (?) in it.
| 25 | 40 | 10 |
| 81 | 9 | 9 |
| ? | 16 | 8 |
Option 1: 30
Option 2: 34
Option 3: 36
Option 4: 32
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Correct Answer: 32
Solution :
The cube root of the product of the first and second numbers is equal to the third number –
Row I:
25 × 40 = $\sqrt[3]{1000 }$ = 10
Row II:
81 × 9 = $\sqrt[3]{729}$ = 9
Similarly, in
Row III:
X × 16 = 8
3
⇒ X = 512 ÷ 16
⇒ X = 32
So, the missing number is 32. Hence, the fourth option is correct.
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