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What number groups do 2 3 4 5 7 9 10 15 21 25 28 and 49 fall into?
Wiki User
∙ 14y ago
Here are some groups to which some of the numbers belong.
Prime numbers: 2, 3, 5, and 7.
Composite numbers: 4, 9, 10, 15, 21, 25, 28, and 49.
Even numbers: 2, 4, 10, and 28.
Odd numbers: 3, 5, 7, 9, 15, 21, 25, and 49.
Triangular numbers: 3 (or 1+2), 10 (or 1+2+3+4), 15 (or 1+2+3+4+5), 21 (or 1+2+3+4+5+6), and 28 (or 1+2+3+4+5+6+7)
Square numbers: 4 (or 22), 9 (or 32), 25 (or 52), and 49 (or 72).
Perfect number: 28 (sum of its proper divisors 1 + 2 + 4 + 7 + 14 is itself).
Factorial numbers: 2 (or 2!) and 6 (or 3!).
Wiki User
∙ 14y ago
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What number increased by -10 is 5?
15. 5 - -10 = 5 + 10 = 15 → 15 + -10 = 15 - 10 = 5
What number must be subtracted from -15 to get 10?
It is -25 because -15--25 = 10
What is a number greater than 10 and a factor of 30?
15 is a number greater than 10 and a factor of 30.
If you added the number of sides in a pentagon to the number of sides in a decagon what number would you get?
You would get the number 15 because a pentagon has 5 sides and a decagon has 10 sides. 10+5=15. Your answer would be 15 sides.
What number is 10 percent of 150?
10% of 150 = 15
How can 30 students be divided into groups of the same size?
2 groups of 15 3 groups of 10 5 groups of 6 6 groups of 5 10 groups of 3 15 groups of 2
What category do groups 1-12 in the periodic table fall under?
They are referred to as the Metals long with Groups 13-15.
Which number is the next logical number in the following sequence of numbers 5 10 15 10?
5+5 = 10 10+5 = 15 15-5 = 15 10+5 = 15
How do you get one tenth?
If you want to find one tenth of a number, divide it by 10. For example, one tenth of 50 is 5. I teach my students about fraction this way. When you consider one tenth of something, 1/10, think of the denominator of the fraction as the number of equal groups you have to divide a particular number into. Then think of the numerator of the fraction as the number of those equal groups you are counting up. Another example: to find 3/10 of 50, divide 50 into ten equal groups of 5 each. Then count three of them: 5 + 5 + 5 = 15. 3/10 of 50 is 15.
What number increased by -10 is 5?
15. 5 - -10 = 5 + 10 = 15 → 15 + -10 = 15 - 10 = 5
What number is next 5 10 15 10?
The Next NumberThe next number is 25 if you use the following pattern: 5, (the number 10), 15 (the first number +10), (the number 10), and the next number is the third number +10 or 25.or you could think of it this way:5, 10 (+5), 15 (+5), -5 (10)The pattern is +5, +5, -5, so the next number would be 15, the next 20, and the next 15.
10 plus the quotient of a number and 15?
10 + 15a * * * * * No! It is 10 + n/15
Which number is next in the senquence 5 10 15 10?
5 10 15 10 5
What is the difference between 10 and -15?
10 is a positive number, -15 is a negative number. Also... The difference is 25, -15 is 25 less than 10.
If 10 percent of a number is 100 what is 15 percent of that number?
100 x 100/10 x 15/100 = 150Therefore, 15 percent of that number would be 150.
What is the average is 10 and the number is 15?
If the average is 10 then 15 is 5 above average.
What number is 10 times greater than 1.5?
It is: 1.5*10 = 15
