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Question

Solve the following:
$1800 \div (11 \times 24 \div 8 \times 3 - 69)^2$

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper PDF (31-Jan-2021) (Shift 1)
The correct answer is
2

Solving the Mathematical Expression

To solve the expression $1800 \div (11 \times 24 \div 8 \times 3 - 69)^2$, we follow the order of operations (PEMDAS/BODMAS).

Order of Operations Steps

  1. Parentheses/Brackets First: Evaluate the expression inside the parentheses: $(11 \times 24 \div 8 \times 3 - 69)$.

    • Multiplication and Division (from left to right):
      • $11 \times 24 = 264$
      • $264 \div 8 = 33$
      • $33 \times 3 = 99$
    • Subtraction: $99 - 69 = 30$

    The expression inside the parentheses simplifies to $30$.

  2. Exponents/Orders: Square the result from the parentheses: $(30)^2$.

    • $(30)^2 = 30 \times 30 = 900$.

    The expression now is $1800 \div 900$.

  3. Division: Perform the final division.

    • $1800 \div 900 = 2$.

Final Result

The value of the expression $1800 \div (11 \times 24 \div 8 \times 3 - 69)^2$ is $2$.

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Important Questions from Bodmas Rule

  1. Solve: {7.88 × 2 + 2.4 × 5 - 242.4 ÷ 4 + [9.2 × 4 - 2.46 of 3 + (36.3 ÷ 3 - 1.42 × 2)]} 

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    (44 of 15) – [(450 × 240 ÷ 60 – 40) ÷ 80 × 25 + 50] – 10 = ?
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