engineering recuitment Rajasthan Informatics Assistant (Suchna Sahayak) Mock Test 2023 Logical Reasoning Puzzle Logical Puzzle
Out of the given three equations, the first two equations have been solved on the basis of a certain system. Solve the third equation following the same procedure.
\(3\ \blacklozenge\ 9 = 14\\1 \ \blacklozenge \ 7 = 4\\a \ \blacklozenge \ b = ?\)
1
(ab - 1) / 2
2
(a - b) / 2
3
(ab - 1) / b
4
(ab + 1) / 2