18
12
20
16
When a student weighing 45 kgs left a class, the average weight of the remaining 59 students increased by 200g. What is the average weight of the remaining 59 students?
When do the two hands of a clock of just after 3 pm make 30°angel between them?
When married four years ago, the average age of husband and wife was 20 years. If they now have a child under the age of 3, what will be the average age of their family?
When the price of a toy was increased by 20%, the number of toys sold was decreased by 15%. What was the effect on the sales of the shop ?
When we reverse the digits of the number 13, the increases by 18. How many other two digit numbers increases by 18 when their digits are reversed?
Which century year is a leap year?
Which greatest number will divide 3026 and 5053 leaving remainders 11 and 13 respectively ?
Which is the largest 4-digit number that can be exactly divisible by 66?
Which is the smallest fraction out of these ?
Which number must be subtracted from x³ + 4x² - 7x + 12 to make x + 4 completely divisible by x?