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1.

If the binary operation `@` is defined on the set `QQ^(+)` of all positive rational numbers by `[email protected]=(ab)/(4)`. Then `[email protected]((1)/(5)@(1)/(2))` is equal to--A. `(3)/(160)`B. `(5)/(160)`C. `(3)/(10)`D. `(3)/(40)`

Answer» Correct Answer - A
Discussion
2.

If the binary operation `@` is defined on the set `QQ^(+)` of all positive rational numbers by `[email protected]=(ab)/(4)`. Then `[email protected]((1)/(5)@(1)/(2))` is equal to--A. `(3)/(160)`B. `(5)/(160)`C. `(3)/(10)`D. `(3)/(40)`

Answer» Correct Answer - A
Discussion
3.

If `a**b=a^(2)` then the value of `(4**5)**3` is…A. `(4^(2)+5^(2))+3^(2)`B. `(4+5)^(2)+3^(2)`C. `(4^(2)+5^(2))^(2)+3^(2)`D. `4^(2)+5^(2)+3^(2)`

Answer» Correct Answer - C
Discussion
4.

Let A be a set of 3 elements. The number of differentity binary operations can be defined A is…A. `3^(9)`B. `3^(3)`C. `3^(2)`D. `3^(6)`

Answer» Correct Answer - A
Discussion