Insert operators (PQRS) to satisfy equation
Question
If P=+, Q=-, R=×, S=÷ then insert the proper notations between the successive numbers in the equation 60 _ 15 _ 3 _ 20 _ 4 = 20 :
Options
SPRQ
QRPS
QRSP
SPQR
Explanation
We need to evaluate the options by substituting the operators into the blank spaces of `60 _ 15 _ 3 _ 20 _ 4 = 20`. Let's test option (b): Q, R, P, S. The operators correspond to `-, ×, +, ÷`. Equation: 60 - 15 × 3 + 20 \div 4. Apply BODMAS rule strictly. First, solve division and multiplication: 20 \div 4 = 5, and 15 × 3 = 45. The expression simplifies to: 60 - 45 + 5. Finally, perform addition and subtraction (left to right): 15 + 5 = 20. This matches the target value perfectly.
Answer: (b).
Question details
Year
2025
Paper
CSAT
Question
Q18
Section
Logical & Analytical Reasoning
Sub-topic
Symbolic Operations
Type
Coding-decoding
Difficulty
Medium
Source hint
Operator substitution
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