Numerical Ability - Simplification & Approximation
If (2³ × 3 + √64) = ? × 4, find the value of ?.
If (2³ × 3 + √64) = ? × 4, find the value of ?.
hard Q9 of 15
Step-by-Step Solution
Step 1: Compute 2³
2³ = 8.Step 2: Multiply by 3
8 × 3 = 24.Step 3: Compute √64
√64 = 8.Step 4: Add results
24 + 8 = 32.Step 5: Form the equation
32 = ? × 4.Step 6: Divide to isolate ?
? = 32 ÷ 4 = .Final Answer:
8 → Option C.Quick Check:
8 × 4 = 32 ✅
Quick Trick: Work with exponents first, then roots, then combine.
Common Mistakes:
- Multiplying before finishing cube first.
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