Numerical Ability - Simplification & Approximation
If (5² + √49) = ? × 8, find the value of ?.
If (5² + √49) = ? × 8, find the value of ?.
medium Q7 of 15
Step-by-Step Solution
Step 1: Compute 5²
5² = 25.Step 2: Compute √49
√49 = 7.Step 3: Add results
25 + 7 = 32.Step 4: Form the equation
32 = ? × 8.Step 5: Divide to isolate ?
? = 32 ÷ 8 = .Final Answer:
4 → Option B.Quick Check:
4 × 8 = 32 ✅
Quick Trick: Work out squares and roots separately, then sum and divide.
Common Mistakes:
- Adding 5 + 2 instead of squaring 5.
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