Fill in 10 numbers o, 1.2.3.4.6.7.8.9.10. Each number can only be used once

Fill in 10 numbers o, 1.2.3.4.6.7.8.9.10. Each number can only be used once

Missing questions

What numbers can I fill in? Nine or ten

1: 2.3.4.5.6.7.8 is OK

Three numbers in a row from 1 to 9 add up to 15

276
nine hundred and fifty-one
four hundred and thirty-eight

If the sum of any three numbers selected from 1, 2, 3, 4, 5, 6, 7, 8, and 9 is even, they have the same number______ There are two different choices

According to the stem analysis: 40 + 4 = 44 (species), a: there are 44 different choices

Choose three numbers from the seven numbers 1, 2, 3, 4, 5, 6 and 7 so that their sum can be divisible by 3. How many different choices are there?

2 + 3 + 5 + 3 = 13 (species), a: there are 13 different selection methods

Choose three numbers from the seven numbers 1, 2, 3, 4, 5, 6 and 7 so that their sum can be divisible by 3. How many different choices are there?

2 + 3 + 5 + 3 = 13 (species), a: there are 13 different selection methods

If the sum of any three numbers selected from 1, 2, 3, 4, 5, 6, 7, 8, and 9 is even, they have the same number______ There are two different choices

According to the stem analysis: 40 + 4 = 44 (species), a: there are 44 different choices

One out of 45 times 60 out of 7 equals
Can 60 and 45 be divided

1/45*60/7
=1/3*4/7
=4/21
First simplify, then calculate
Divide it all by 15~

(28 + 2 / 7 * 7 / 8) * 1 / 4. How much is it?

(28 + 2 / 7 * 7 / 8) * 1 / 4
=(28 + quarter) * quarter
=28 * quarter + quarter * quarter
=7 + 1 / 16
=Seven and one sixteenth

A number plus half of it equals 7.5. What's the number?

Let this number be x, x + 0.5x = 7.5, 1.5x = 7.5, x = 5; answer: this number is 5