Question : Directions: If 4 * 2 = 3 and 8 * 4 = 3, then 21 * 7 = ?
Option 1: 4
Option 2: 3
Option 3: 8
Option 4: 16
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Answer (1)
21st Jan, 2024
Correct Answer: 4
Solution :
Given:
4 * 2 = 3
8 * 4 = 3
(4 * 2) = 3→(4 + 2) ÷ 2 = 6 ÷ 2 = 3
(8 * 4) = 3→(8 + 4) ÷ 2 = 12 ÷ 4 = 3
Similarly, for (21 * 7)→(21 + 7) ÷ 7 = 28 ÷ 7 = 4
Hence, the first option is correct.
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