Question 67

If S means '$$+$$' L means '$$\times$$' U means '$$\div$$' and K means '$$-$$', then the value of
21 S 1 U 7 L 15 U 6 L 14 K 55 is

Solution

21 S 1 U 7 L 15 U 6 L 14 K 55

After replacing the letters with given symbols

$$21+1\div7\times\ 15\div6\times\ 14-55$$

$$21+\frac{1}{7}\times\ \frac{15}{6}\times\ 14-55$$

$$26-55$$

-29.

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