If L stands for $+$, M stands for $-$, N stands for $\times $, P stands for $\div $, then 14 N 10 L 42 P 2 M 80 =? (a) 153 (b) 81 (c) 105 (d) 103
Hint: In this question, we will first substitute all the alphabet symbols with the mathematical operation they represent and then apply the BODMAS rule to solve it.
Complete step-by-step answer: Here, in given question, English alphabets are used as a symbol in place of mathematical operations as given below: L represents addition, that is $+$, M represents subtraction, that is $-$, N represents multiplication, that is $\times $, P represents division, that is $\div $. For example, 2 L 3 will mean 2 + 3. Also, according to the BODMAS rule, while evaluating any given expression in mathematics, order of preference is: Bracket, Of, Division, Multiplication, Addition, Subtraction. Now, the given expression is, 14 N 10 L 42 P 2 M 80 Changing alphabets to mathematical operations, we get, \[14\times 10+42\div 2-80\] Using BODMAS rule, we will first do division, so dividing 42 by 2, we get, \[14\times 10+21-80\] Second operation here according to BODMAS rule is multiplication, so multiplying 14 by 10, we get, $140+21-80$ third operation here according to BODMAS rule is addition, so adding 140 with 21, we get, $161-80$ Now subtracting 161 by 80, we get, \[81\]. Hence, the value of the given expression is 81. Therefore, the correct answer is option (b).
Note: In this type of questions, do not get confused by the alphabets between the numbers in an expression, it is just a BODMAS rule problem and alphabets are added to check your aptitude knowledge.