The number 20 is.
11
The number 10 comes between 6 and 15. The numbers 3, 6, 10, 15, 21, and 28 are called TRIANGLE NUMBERS because they can be represented by lines of dots that form an equilateral triangle. They represent the additive sum 1+2+...+n which is equal to n (n+1)/2.
28
Find the missing term 8,15,28,53,
The number 20 is.
11
45
The number 10 comes between 6 and 15. The numbers 3, 6, 10, 15, 21, and 28 are called TRIANGLE NUMBERS because they can be represented by lines of dots that form an equilateral triangle. They represent the additive sum 1+2+...+n which is equal to n (n+1)/2.
28
Find the missing term 8,15,28,53,
28
Convert the mixed number to an improper fraction, make the two fractions equivalent fractions with the same denominator, and compare the numerators: 1 1/2 = (1×2+1)/2 = 3/2 3/2 = (3×5)/(2×5) = 15/10 15 < 28 → 15/10 < 28/10 → 1½ < 28/10 → No; 1½ is not greater than 28/10
35
If you mean numbers between 15 and 50 then they are: 19, 28, 37 and 46
you add 10 to each number in the series of three. If you break the pattern into groups of three you will see 8-14-5 then 18-24-15 then 28-34. . . so 8+10=18+10=28, 14+10=24+10=34, 5+10=15+10=25, so continuing the pattern would be starting at 28: 28-34-25-38-44-35-48-54-45. . .
55