A number 840 is divided in the ratio 7:5. Find the first part.
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A number 450 is divided in the ratio 5:4. Find the first part.
A number 720 is divided in the ratio 4:5. Find the first part.
A number 560 is divided in the ratio 3:5. Find the first part.
A number 360 is divided in the ratio 2:3. Find the first part.
Find the smallest positive integer that leaves remainder 4 when divided by 5 and remainder 2 when divided by 7.
Find the smallest positive integer that leaves remainder 5 when divided by 6 and remainder 1 when divided by 7.
Find the smallest positive integer that leaves remainder 3 when divided by 7 and remainder 4 when divided by 9.
Find the smallest positive integer that leaves remainder 1 when divided by 4 and remainder 2 when divided by 5.
Find the smallest positive integer that leaves remainder 2 when divided by 3 and remainder 3 when divided by 5.
Which numbers are composite?
Which numbers are divisible by 11?
Which integers leave remainder 2 when divided by 5?
Which fractions are already in lowest terms?
Which pairs are co-prime?
Which numbers are perfect cubes?
Which numbers are perfect squares?
Which numbers are divisible by both 6 and 8?
Convert decimal 511 into base 8.
Convert decimal 83 into base 8.