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Simplification
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NTPC Graduate Tier 1 2025 Shift-1 📅 06 May, 2025

Calculate the exact value of the expression: 45 / 9 × 3 + 15 - 8

A
18
B
22
C
12
D
25
Result Summary
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NTPC Graduate Tier 1
2025 • 06 May, 2025 • Shift-1
Calculate the exact value of the expression: 45 / 9 × 3 + 15 - 8
Correct Answer
22
Order of Operations Framework: Mathematical integrity requires rigid adherence to the BODMAS/PEMDAS sequence, which dictates division and multiplication precede......
Ref/Book : NTPC Graduate Tier 1 2025
Ref. Subject Mathematics
Chapter -
Ref. Topic Simplification
Pg. No -
💡 Analysis & Explanation
Order of Operations Framework ▼
Mathematical integrity requires rigid adherence to the BODMAS/PEMDAS sequence, which dictates division and multiplication precede addition and subtraction.
Primary Execution ▼
Scanning from left to right, we tackle the division first: 45 / 9 exactly yields the integer 5.
Secondary Execution ▼
We immediately substitute this back and perform the multiplication phase: 5 × 3 gives 15.
Final Resolution ▼
The expression is now a simple linear string: 15 + 15 - 8. Summing the first two terms gives 30, and subtracting 8 leaves exactly 22.
Conclusion ▼
The mathematically sound and final calculated answer is 22.
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