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Interview Mental Math - 20

### Interview Mental Math - 20 1. Larger number is 10 more than the smaller number. Their sum is 36. The smaller number is? a. 16 b. 13 c. 23 d. 24 2. An was bought at 90% of its value and sold for 10% more than its actual value, percent profit based on actual cost will be? a. Exactly 20% b. More than 20% c. Less than 20 d. Less then 20% 3. It takes 6 minutes to boil an egg. How much time will it take to boil 3 eggs together? a. 18 minutes b. 3 minutes c. 6 minutes d. 9 minutes 4. Click the correct answer. Do not use a calculator: 5 x * = 40? a. 6 b. 5 c. 8 d. 7 5. The average of eight numbers is eight. After two numbers are removed, the average of the remaining numbers remains 8. Two removed numbers, once added together are equal to? a. 14 b. 18 c. 16 d. 21 6. Two boys caught 25 birds. Ali caught four times as many as Akbar. How many birds did Akbar catch? a. 20 b. 3 c. 6 d. 5 7. A bicycle costing Rs.300 is sold at Rs.270. What is the loss percentage? a. 5% b. 10.1% c. 10% d. 11% 8. If you start from point A and walk 1 km towards the North, then turn right and walk 1 km, then turn right again and walk 1 km. Which direction you are facing now? a. East b. West c. West d. South 9. The average weight of 15 students in a class is decreased by 1 KG when one of the students who weights 50 kg is replaced by a new boy. What is the age of new boy?  a. 41 kg b. 29 kg c. 35 kg d. 37 kg
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