1. There are 120 balls in a box. 20% balls are red, 40% are green and rest of the balls are black. What is the half number of black balls?
2. 6 students of mathematics are standing on a circle with equal distance. What is the maximum angle between two students?
3. 10 less than 20% of 120 is
4. 18 and multiple of ___ are equal.
5. 15 is the 25% of what.
6. When 32 is divided by 16% of 50 the resultant is
7. Sum of 20% of 60 and 60% of what is equal to 30
8. Average of three unknown digits is 4 less than 22. What is the sum of these digits.
9. Martin is one-fourth of his father’s age. 3 years before his father’s age he was 33 years. What is the current age of Martin.
10. x = 5/2 and y = 2/5, x+y = ?
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