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## Math Problems 1. Find the greatest common factor of 12, 15, 18 and 21. * a) 6 * b) 8 * c) 3 * d) 12 2. The average age of 2 boys is 10 years old. If the average age of 11 boys is 9 years old, what is the age of the 12th boy? * a) 21 years * b) 24 years * c) 33 years...

## Math Problems 1. Find the greatest common factor of 12, 15, 18 and 21. * a) 6 * b) 8 * c) 3 * d) 12 2. The average age of 2 boys is 10 years old. If the average age of 11 boys is 9 years old, what is the age of the 12th boy? * a) 21 years * b) 24 years * c) 33 years * d) 25 years 3. What is the simple interest on ₹18440 at 15% per annum for 4 years? * a) ₹11064 * b) ₹12250 * c) ₹11500 * d) ₹11075 4. A canteen requires 28 dozen bananas for a week. How many bananas will be required for 47 days? * a) 2352 * b) 196 5. Find the cube root of 2197. * a) 7 * b) 11 * c) 13 * d) 19 6. The length of a rectangular field is 30 meters and the width is 20 meters. Find the perimeter of the field. * a) 100 m * b) 80 m * c) 50 m * d) 90 m 7. One pipe can fill a water tank three times faster than another pipe. If both pipes together can fill the empty tank in 30 minutes, how long will it take the slower pipe to fill the tank? * a) 4 hours * b) 5 hours * c) 3 hours * d) 2 hours