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Questions

If a sprinter takes 30 steps in 9 seconds, how many steps does he take in 54 seconds?

A town has a population growth rate of 10% per year. The population is 1990 was 2000. What is the population in 1992?

On a certain test, a student must select 3 out of 6 question to answer. what is the total number of different combinations of 3 questions that the student can select?

which of the following terms does not describe the number 9?

How many times does the digit " 4", come to write numbers from 1 to 100?

If x=y+4 and x=20-y, then x2-y2=

Which one of the flowing is a solution to the equation x4-2x2=-1

If n is number such that - (-82n=) =28+2n then n=

If x2+y2=xy, the (x+y)4=

If x+5>2 and x-37, the value of x must be between which of the following pairs of numbers?