Find the law 2,5,10, x, 26,37,50. What is the number represented by X

Find the law 2,5,10, x, 26,37,50. What is the number represented by X

seventeen
It's very simple. Singular progressive addition 2,2 + 3 = 5,5 + 5 = 10,10 + 7 = 17,17 + 11 = 26

-3 √ 8 / 27 * √ 4 / 3 * √ 27

-3 √ 8 / 27 * √ 4 / 3 * √ 27
=-8 / 3 * √ 4 / 3
=-32/（3√3）
=-32/9√3

① What is the minimum number to be filled in the brackets? 2 × 26th () > 12 / 27th
② . fill in the maximum number: 21 × 5 / 14 ＞ () 37 / 14

The first question, try to know, 5 can't, 6 can. So the minimum is 6
2. It's wrong to fill in the maximum number, as long as it's larger than 5, it's OK, such as 10000000, of course. The minimum number is 5, but 4 is not. So I seriously doubt that the entry of the question is wrong

What is the sum of 33 out of 43 + 27 out of 47 + 39 out of 59 divided by 22 out of 43 + 18 out of 47 + 26 out of 59?

Numerator (divisor): 3 * (11 / 43 + 9 / 47 + 13 / 59) denominator (divisor): 2 * (11 / 43 + 9 / 47 + 13 / 59)
About 3 / 2, 3 / 2