Question : Directions: If (3)2 @ 1 * 7 = 98 and (4)2 @ 2 * 16 = 178, then (5)2 @ 3 * 9 = ?
Option 1: 218
Option 2: 262
Option 3: 253
Option 4: 259
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Correct Answer: 262
Solution : Given: (3) 2 @ 1 * 7 = 98, (4) 2 @ 2 * 16 = 178
Use the following operations in place of the given symbols @ and * – Like, (3) 2 @ 1 * 7 = 98 (3) 2 × 10 + 1 + 7 = 9 × 10 + 1 + 7 = 90 + 1 + 7 = 98 And, (4) 2 @ 2 * 16 = 178 (4) 2 × 10 + 2 + 16 = 16 × 10 + 2 + 16 = 160 + 2 + 16 = 178 Similarly, (5) 2 @ 3 * 9 = ? = (5) 2 × 10 + 3 + 9 = 25 × 10 + 3 + 9 = 250 + 3 + 9 = 262
So, the equation is equal to 262. Hence, the second option is correct.
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