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If A means +, B means −, C means ×, D means ÷, then what will come in place of the question mark (?) in the following equation? 25 B 3 C 4 A 30 D 6=?
20
17
19
18
18
Replace letters with symbols (A=+, B=-, C=*, D=/) and follow BODMAS (Bracket, Of, Division, Multiplication, Addition, Subtraction).
Replace letters with symbols (A=+, B=-, C=*, D=/) and follow BODMAS (Bracket, Of, Division, Multiplication, Addition, Subtraction).
Symbol Substitution
Replace the letters with their given mathematical operators: A=+, B=-, C=*, D=/. The equation becomes: 25 - 3 * 4 + 30 / 6.
BODMAS Application
First, perform division (30 / 6 = 5), then multiplication (3 * 4 = 12). The equation is now: 25 - 12 + 5.
Final Calculation
Solve addition and subtraction from left to right: (25 - 12) = 13; then (13 + 5) = 18.
A: 20 is mathematically incorrect. B: 17 is mathematically incorrect. C: 19 is mathematically incorrect. D is the correct result of 18.
D is correct because the sequence 25 - 3 * 4 + 30 / 6 simplifies via BODMAS to 25 - 12 + 5, which equals 18.
In coding-decoding math puzzles, always prioritize the division operation first to simplify larger numbers, as it usually resolves the most complex part of the expression.
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