Question : Directions: (2)* * 4 = 2, and (4)* * 4 = 16, then what is the value of A in (6)* * A = 18?
Option 1: 12
Option 2: 14
Option 3: 16
Option 4: 20
Correct Answer: 12
Solution :
Given:
(2)
*
* 4 = 2; (4)
*
* 4 = 16
Like, (2)
*
* 4 = 2; 2
3
÷ 4 = 8 ÷ 4 = 2
(4)
*
* 4 = 16; 4
3
÷ 4 = 64 ÷ 4 = 16
Similarly, (6)
*
* A = 18;
⇒ 6
3
÷ A = 18
⇒ 216 ÷ A = 18
⇒ A = 216 ÷ 18
⇒ A = 12
Hence, the first option is correct.
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