If 15@7=44; 5@4=18; 6@17=46; then what is the value of 17@4=?
It follows the sequence - $$ (n1+n2) \times 2 $$
$$ (15+7) \times 2 = 44; $$
$$ (5+4) \times 2 = 18; $$
$$ (6+17) \times 2 = 46; $$
For 17@4
$$ (17+4) \times 2 = 42; $$
Hence Option 'B' is correct.
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