Simplify: \( \left(2 \frac{1}{2} + 3.6\right) - 1.9 \)
सरलीकृत कीजिए: \( \left(2 \frac{1}{2} + 3.6\right) - 1.9 \)
Options / विकल्प
- A. 4.2 ✅
- B. 5.2
- C. 6.2
- D. 7.2
Answer / उत्तर
✅ 4.2
Solution / समाधान
To simplify the expression, follow the BODMAS rule (Brackets, Orders, Division and Multiplication, Addition and Subtraction). Also, convert the mixed fraction into decimal form for easier calculation.
BODMAS नियम का प्रयोग करें और मिश्रित भिन्न को दशमलव में बदलें।
Convert the mixed fraction \( 2 \frac{1}{2} \) to decimal:
\[ 2 \frac{1}{2} = 2.5 \]
Now substitute and simplify:
\[ (2.5 + 3.6) - 1.9 = 6.1 - 1.9 = 4.2 \]
Final Answer / अंतिम उत्तर
\[ \boxed{4.2} \]
Quick Revision / मुख्य बिंदु
- Apply the BODMAS rule to simplify expressions correctly.
- Convert mixed fractions to decimals for easier calculation.
- Perform addition inside the bracket first, then subtraction.
- Final simplified value is 4.2.
For related practice, you may also check: Evaluate: 31 3 + 18 3 − 37 3 + 210
Evaluate: 31 3 + 18 3 − 37 3 + 210