20@7=50, 25@8=62, 35@9=84, 57@12=?
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Answer:
The final answer is 134.
Step-by-step explanation:
Given,
20 @ 7 = 50
25 @ 8 = 62
35 @ 9 = 84
We need to find the value of 57 @ 12.
This is a simple problem but it requires one to think. This is a simple question of the type a pattern. Every one of these follows a pattern and it is easy to find out.
For instance
1) 20 @ 7 = 50
20 + 7 = 27
27 * 2 = 54
54 - 4 = 0
2) 25 @ 8 = 62
25 + 8 = 33
33 * 2 = 66
66 - 4 = 62
3) 35 @ 9 = 84
35 + 9 = 44
44 * 2 = 88
88 - 4 = 84
Hence for 57 @ 12
57 + 12 = 69
69 * 2 = 138
138 - 4 = 134
Hence the answer is 134.
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