It is: 11
23 is an odd number between 10 and 30 that gives a remainder of 2 when divided by 7.
It is: 20
Any number between 30 and 40 can be a factor. The common factors of 30 and 40 are 1, 2, 5 and 10.
37
30
It is: 11
23 is an odd number between 10 and 30 that gives a remainder of 2 when divided by 7.
To find a number that can be squared to give a result between 10 and 30, we can start by finding the square roots of 10 and 30. The square root of 10 is approximately 3.16, and the square root of 30 is approximately 5.48. Therefore, any number between 3.16 and 5.48 when squared will give a result between 10 and 30. One such number is 4, as 4 squared is 16.
It is: 20
(10+20)/2 = 30/2 = 15
70-10=60. 60/2=30. 10+30 or 70-30=40. Answer 40
Any number between 30 and 40 can be a factor. The common factors of 30 and 40 are 1, 2, 5 and 10.
The numbers between 10 and 30 that have exactly 5 factors are 16 and 25. The number 16 has factors 1, 2, 4, 8, and 16. The number 25 has factors 1, 5, 25, but since it is a perfect square, it also includes the repeated factor of 5. These are the only two numbers between 10 and 30 that have exactly 5 factors.
37
perfect square numbers are 16 and 25
48 has 10 factors.