Unique Academic Board Solutions for Exercise 1: Practice Exercise

If $6 \times 5 = 31, 7 \times 8 = 57, 3 \times 4 = 13$ then $9 \times 10 =?$

If $879 = 8$, $625 = 1$ and $586 = 9$, then $785 = ?$

If given, $12 \left(169\right) 5, 4 \left(20\right) 2$ and $1 \left(26\right) 5$, then $7 (?) 3$

If '$+$' stands for '$\times$', '$-$' stands for '$+$' and '$\times$' stands for `$-$', which of the following is false? 

If $2^3+ 4 = 2, 4^4+ 8 = 32$, then what will be the value of $6^2+4$? 

If $4*2@3 = 6$, $18*6@4 = 12$,then what will be the value of $24*3@7$? 

If $2 \& 6 \% 7 = 33$, $4 \& 6 \% 8 =54$, then what will be the value of $6 \% 8 \& 9$? 

If $T$ means '$\times$', $U$ means `$-$', $V$ means '$÷$' and $W$ means '$+$', then what will be the value of the following expression?

$(50 V 2) W (28 T 4)$