Natural numbers - practice problems - page 5 of 91
Number of problems found: 1804
- When three
When three positive integers a, b, and c are multiplied together, their product is 64. Suppose a < b < c. In how many ways can the numbers be chosen? - Equation 94
If 9 more than twice a number is 3 less than 3 times the same number. What is the number? - 280 oranges
280 oranges are divided among 50 girls and boys so that each boy gets 5 oranges and each girl gets 7 oranges. How many girls are there? - Fruits
2/3 of the fruits are cherries, and the rest are grapes. I sold 1/2 of the cherries and 1/4 of the grapes. If I had 280 left, how many fruits had I at first? - Math class
There are a total of 30 students in a math class. The number of boys is 2 more than 3 times the number of girls. How many boys are in this math class? - Digits sum
A two digit number is 3 times the sum of its digits. If 45 is added to the number, its digits are interchanged. Find the sum of the digits of the number. - With remainder What is the greatest number that divides 13850 and 17030 leaves a remainder 17?
- Exactly divisibled Find the least number that can be divided exactly by all the even numbers between 10 and 20
- Ice cream 4
Ice cream sales for a shop in the last 4 months have been 200, 250, 300, and 350. What are the expected sales in the 5th month? - LCMs What is the difference between the LCM (16, 400) and LCM (15, 65)?
- LCM and HCF 3 LCM of two integers is 1237. What is their HCF?
- Cardinals and robins
Lee saw c cardinals and 5 robins in his yard. Write the expression that shows the number of birds Lee saw in all. - Older or younger The age of a man after 15 years is 4 times the age of that man 15 years before. Find his present age.
- HCF - big numbers Find the HCF of 72030 and 88200
- Solve 25 Solve for a in (a+8)/2-3(a+10)/5=1.
- The remainder 3 The remainder is 31 when dividing a number by 45. What would the remainder be if the same number were divided by 15?
- Cows and hens
In a group of cows and hens, the number of legs is 14, more than twice the number of heads. Find the number of cows. - Cupcakes
Keia and Hiro made a total of 27 cupcakes. Keia made 2 times as many cupcakes as Hiro. How many cupcakes did Hiro make? - Heads and legs 2
There are a number of unspecified numbers of cows and hens in a den. If there are a total of 30 heads and 80 legs in the den, find the number of cows and hens in the den. - Factorial divisible by 75 Find the least positive integer n such that n! is divisible by 75.
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