Question

Find the value of the following :

√(8836) × 20 × 4 + √(5041) × 10 × 8 – √(4489) × 5 × 0.20 = ?
1. 13133
2. 13313
3. 11333
4. 13113
5. 11331

Answer 1

Correct Answer - Option 1 : 13133

Concept: Students should remember that square and square roots are one of the most important aspects that they need to learn in order to crack the exam.

Solution:     

√8836 = 94

√5041 = 71

√4489 = 67

So the equation becomes,

94 × 80 + 71 × 80 - 67

= 80 × (94 + 71) - 67

= 80 × 165 - 67

= 13200 - 67

= 13133