Natural numbers - practice problems - page 6 of 87
Number of problems found: 1736
- Factorial divisible by 75
Find the least positive integer n such that n! is divisible by 75.
- Evaluate expressions
Which expression equals 12? ...
- The sum 50
The sum of five consecutive integers is 385. Which one of these five integers is prime?
- Simple equation 12
Three times a number divided by 2 plus 5 equals 20. Find the number.
- The difference 4
The difference between four times a number and five is the same as three more than twice a number. Find the number.
- Divisor of two numbers
Find the (greatest common) divisor of 18 and 45.
- The remainder
Find the remainder if 17²00 is divided by 18.
- Five and four
Five divided by four times the number is 0.25. What is that number?
- Twice 2
Twice the difference between a number and 3 is equal to three times the sum of the number and 8. Find the number.
- The sum 32
The sum of three consecutive odd numbers is 33. What are the three consecutive odd numbers?
- I added
I added 10 to 3 times a number; the result is equal to 4 times the number. What is the number?
- The number 88
Write the number 88 as a product of prime factors.
- The difference 6
The difference between a number and 15 is multiplied by -3, and the result is - 30
- The sum 38
The sum of two decimal numbers is four. Their difference is one. What are the numbers?
- Distributive property 2
Show with a drawing that 5 × (6 + 2) = 5 × 6 + 5 × 2. What is the name of this property?
- Planetary system
Robert has built a mechanical model solar system with three balls representing planets at the end of rods. Each rod is attached to the center, representing the Sun. The planets are lined up when he turns on the motor. The innermost planet makes a revoluti
- Fruits
(I) bought three apples, two oranges, four pears, and five bananas, which in total cost £3.73. (i) I bought twenty-one apples, no oranges, eight pears, and fifteen bananas, which in total cost £7.57. (i) I bought one apple, eighteen oranges, fourteen pear
- Of three
Of three positive numbers the product of the first and second is 42, second and third is 56 and that of third and first is 48. Find the third number.
- Human population
The populations of two cities after t years can be modeled by -150t+50,000 and 50t+75,000. What is the difference in the populations of the towns when t=4?
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