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Question

Evaluate the given expression.
\(19-20\div4\)

This question was previously asked in
RRB NTPC 2024 Undergraduate CBT 1 Question Paper (29-Aug-2025) (Shift 1)
The correct answer is
14

Evaluating the Mathematical Expression: \(19-20\div4\)

To evaluate the given expression, we need to follow the standard order of operations, often remembered by the acronyms PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction) or BODMAS (Brackets, Orders, Division and Multiplication, Addition and Subtraction).

Understanding the Order of Operations

According to the order of operations, division should be performed before subtraction.

  • Division: \(20 \div 4\)
  • Subtraction: The result of the division is then subtracted from 19.

Step-by-Step Calculation

Let's break down the calculation step-by-step:

  1. First, perform the division: \(20 \div 4 = 5\)
  2. Next, perform the subtraction using the result from the division: \(19 - 5 = 14\)

Final Result

Therefore, the value of the expression \(19-20\div4\) is 14.

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