# Prime numbers - practice problems

#### Number of problems found: 458

- HCF - big numbers

Find the HCF of 72030 and 88200 - GCD&LCM of three

GCD of three numbers is 30 and LCM is 900. As two the are 60 and 150, find the number. - Relay teams

There are 159 students to be grouped into relay teams. Each team should have the same number of students. Can each team have 3,5 or 6 students? Explain. - The ratio 16

Express the following ratio in simplest form: 90:100 - Common denominators

Find the common denominator 5/6 and 1/3 - Eggs in basket

If the eggs in a basket are removed twice at a time, one will remain. Two eggs will remain if the eggs are removed three at a time. If the eggs are removed four, five, or six at a time, the three, four, and five eggs will remain, respectively. However, no - 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 - Perfect square or cube

Would you classify 324 as a perfect square, perfect cube, both, or neither? ... - LCM or HCF

Find the lowest common multiple of these two numbers: 105 226 - A number 8

A number K is such that when it is divided by 27, 30, or 45, the remainder is 3. Find the smallest possible value of K - LCMs

What is the difference between the LCM (16, 400) and LCM (15, 65)? - Paper

The drawing paper has dimensions 220mm and 308mm. Pupils should cut it into squares of the same size so that they are as large as possible. Determine the dimensions of the square in cm and the number of squares. - Simple form

Given ratio 45: 90 = Write the ratio in a Simple form - Same remainder

Find the greatest number that will divide 43, 91, and 183 so as to leave the same the remainder in each case. - Ronald 2

Ronald and Tim both did their laundry today. Ronald does laundry every 6 days, and Tim does laundry every 9 days. How many days will it be until Ronald and Tim both do laundry on the same day? - Jackie 2

Jackie bought an equal number of tulip bulbs and daffodil bulbs. Along the length of her garden, Jackie planted 6 daffodil bulbs and 3 tulip bulbs per foot. She has 5 daffodil bulbs and 29 tulip bulbs remaining to plant elsewhere. How long is Jackie's gar - Reduce 9

Reduce the fraction 16/24 to the lowest terms. - A tailor

A tailor bought 72 meters of white cloth and 16 meters of blue cloth. The material was cut into equal lengths to make a school uniform. What was the greatest length of each piece of cloth that was cut? - Two pieces

Two pieces of cloth 15 and 20 meters long are to be cut into small pieces of equal lengths. What will be the greatest length of each piece? - Composition 83241

You have to create as many identical candy boxes as possible from 280 orris, 252 nougat, and 420 marzipan candies. At the same time, you must not have any candy left or missing. What will be the composition of one box of chocolates, and how many candies w

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