Find the sum of all natural numbers less than 1,000 that are divisible by both 3 and 5 but not by 7.
There are nine consecutive even numbers such that the smallest number is 50% of the largest number. Find the sum of the second lowest and second highest...
Find the largest four-digit number which when divided by 5, 7, 9, and 12, leaves a remainder 2, 4, 6, and 9 respectively.
- Determine the largest common factor of 1764, 4410, and 8820.
How many whole numbers from 1 to 600 (both included) are divisible by 4 but not divisible by 6?
- If '38k721' is divisible by 3, then what is the highest possible value of 'k'?
In a farm, there are some cows and some chickens, only. If the total number of heads counted in the farm is 48 and total number of feet counted is 140,...
- For which values of x is the expression 25x - 5x² - 100 positive?
In a yard, there are some rabbits and some parrots, only. If the total number of heads counted is 34 and total number of feet counted is 94, then find ...
