1.) Find the number of the digit 1 in the numbers 1, 2, 3, . . . , 100.
2.) Admission tickets to a variety show costs Php 80 for adults and Php 50 for kids. The ratio of kids to adults is 5:2. If they paid Php 10,000, find the number of adults in the group.
3.) How large is a base angle of an isosceles triangle if its vertex angle is 52○?
4.) The volume of a cube is 216 cm3. What is the total area of the faces of the cube?
5.) What is the largest 4-digit number that is a common multiple of 3 and 4? Continue reading