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Question

Simplify: \(18 - [6 \times 2 - (3 + 1)] + 7\)

This question was previously asked in
RRB NTPC 2025 Graduate CBT 2 Question Paper PDF (10-Jul-2026) (Shift 1)
The correct answer is

17

Apply BODMAS, working the innermost bracket first: \((3 + 1) = 4\).

Next resolve the square bracket: \([6 \times 2 - 4] = [12 - 4] = 8\).

Now substitute back: \(18 - 8 + 7\).

Working left to right: \(18 - 8 = 10\), then \(10 + 7 = 17\).

Hence, the value of the expression is \(17\).

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    (420 ÷ 12 × 35 + 452- 152) = ?2

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