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Question : Directions: If 14 @ 8 = 91 and 18 @ 4 = 51, then 21 @ 9 = ?

Option 1: 160

Option 2: 155

Option 3: 151

Option 4: 168


Team Careers360 2nd Jan, 2024
Answer (1)
Team Careers360 4th Jan, 2024

Correct Answer: 168


Solution : Given:
14 @ 8 = 91; 18 @ 4 = 51 

From the solved equations –
14 @ 8 = 91→(14 × 8) – 21 = 112 – 21 = 91
18 @ 4 = 51→(18 × 4) – 21 = 72 – 21 = 51
Similarly, 21 @ 9→(21 × 9) – 21 = 189 – 21 = 168

The required value is 168. Hence, the fourth option is correct.

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