Divisibility - practice for 13 year olds - last page
Number of problems found: 147
- Count of roots
How many solutions have equation x. y = 7757 with two unknowns on the set of natural numbers? - Divisibility
Determine the smallest integer which divided 11 gives remainder 4. When divided, 15 gives remainder 10 and when divided by 19 gives remainder 16. - Divisors
Find all divisors of number 432. How many are them? - Lines
Five bus lines run at intervals 3, 6, 9, 12, 15 minutes. In the morning, it suddenly starts at 4:00. After how many minutes do the bus lines meet again?
- Diofant 2
Is equation 70x +52y = 34 solvable on the set of integers Z? - Diofant equation
In the set of integers (Z), solve the equation: 212x +316y =0 Write result with integer parameter t in Z (parameter t = ...-2,-1,0,1,2,3... if equation has infinitely many solutions) - Rectangles
How many rectangles with area 3152 cm² whose sides are natural numbers?
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