A = 12 + 34 + 78 + 1516 + +10231024, what is the largest natural number smaller than a______ .

A = 12 + 34 + 78 + 1516 + +10231024, what is the largest natural number smaller than a______ .

A=12+34+78+1516+… +10231024=（1-12）+（1-14）+（1-18）+（1-116）+… +（1-11024）=1-12+1-14+1-18+1-116+… +1-11024=10-（12+14+18+116+… +11024) = 10-10231024 = 911024; so the largest natural number smaller than a is 9; answer: the largest natural number smaller than a is 9
Number a is 23 of number B, number B is 34 of number C, and the sum of number a, B and C is 216. What are the numbers of number a, B and C?
A: B = 2:3, B: C = 3:4; a: B: C = 2:3:4, total number: 2 + 3 + 4 = 9, a: 216 × 29 = 48, B: 216 × 39 = 72, C: 216 × 49 = 96
The number of workers in workshop a is 25 of that in workshop B. later, the number of workers in workshop a increased by 20 and that in workshop B decreased by 35. In this way, the number of workers in workshop a is 79 of that in workshop B. now, how many workers are there in workshop a and workshop B?
Suppose the number of people in workshop B is x, then the number of people in workshop a is 79x. According to the meaning of the question, we get: 79x-20 = (x + 35) × 25, 79x-20 = 25X + 35 × 25, 79x-20 = 25X + 14, & nbsp; 1745x = 34, & nbsp; & nbsp; & nbsp; X = 90, the number of people in workshop a: 79x = 90 × 79 = 70
Number a is 23 of number B, number B is 34 of number C, and the sum of number a, B and C is 216. What are the numbers of number a, B and C?
A: B = 2:3, B: C = 3:4; a: B: C = 2:3:4, total number: 2 + 3 + 4 = 9, a: 216 × 29 = 48, B: 216 × 39 = 72, C: 216 × 49 = 96
The number of workers in workshop a is 25 of that in workshop B. later, the number of workers in workshop a increased by 20 and that in workshop B decreased by 35. In this way, the number of workers in workshop a is 79 of that in workshop B. now, how many workers are there in workshop a and workshop B?
Suppose the number of people in workshop B is x, then the number of people in workshop a is 79x. According to the meaning of the question, we can get: 79x-20 = (x + 35) × 25, 79x-20 = 25X + 35 × 25, 79x-20 = 25X + 14, & nbsp; 1745x = 34, & nbsp; & nbsp; & nbsp; X = 90, the number of people in workshop a: 79x = 90 × 79 = 70
Number a is 23 of number B, number B is 34 of number C, and the sum of number a, B and C is 216. What are the numbers of number a, B and C?
A: B = 2:3, B: C = 3:4; a: B: C = 2:3:4, total number: 2 + 3 + 4 = 9, a: 216 × 29 = 48, B: 216 × 39 = 72, C: 216 × 49 = 96
The ratio of the number of people in workshop a and workshop B is 5:7. Party A transfers 20 people to workshop B, and the ratio of the number of people at home is 6:7. How many people can be added?
I just made a mistake. It should be that the ratio of the number of people in the two workshops is 5:7. Party A transfers 20 people to Party B. the ratio of Party A and Party B is 6:7. How many people are there in each workshop?
Let a have X and B have y
All have X / y = 5 / 7
(x-20)/(y+20)=6/7
Solving equations
x=-200
y=-280
So you are wrong again
There are three numbers a, B and C. the number a is three times the number B, and the number B is two times the number C. if the sum of the three numbers is 36, then the number a is (), the number B is (), and the number C is
thinking
Let C be x, B be 2x and a be 6x
X+2X+6X=36
X=4
C is 4, B is 8, a is 24
In a factory, the ratio of the number of people in workshop a and workshop B is 4:3. Due to the need of work, 10 people are transferred from workshop a to workshop B. at this time, the number of people in workshop B accounts for 2 / 3 of the number of people in the two workshops
How many people are there in workshop B now?
The answer is 28
Let a and B have 4K and 3K people respectively, then (4k-10) and (3K + 10) are the number of people in workshop a and B. according to the title "at this time, the number of people in workshop B accounts for 2 / 3 of the number of people in the two workshops", we can get (4k-10) / (3K + 10) = 1 / 2. Therefore, we can get k = 6, that is, the number of people in workshop B is 3K + 10 = 28
(the answer is so detailed, I don't want to give the best answer yet.)
If the sum of a, B and C is 36, the number of a is 1 times larger than that of B, and 1 / 2 of B is exactly equal to that of C, then a, B and C are?
36-1=35 35÷7=5 5×2=10 10×2+1=21