The factors of 20 are 2,4,5,10,20 () Judge right or wrong

The factors of 20 are 2,4,5,10,20 () Judge right or wrong


Wrong. Because there's another one



Because 10 / 5 = 2, so 10 is a multiple, 5 is a factor, right or wrong?


This sentence is wrong. Factor and multiple are relative. We can't say that a certain number is a factor. We should say that 10 is a multiple of 5 and 5 is a factor of 10



In 2,5,10, what is a multiple of what and 2 is a factor of what


10 is a multiple of 5, 10 is a multiple of 2, and 2 is a factor of 10



1+2+3+4...100=?


int sum = 0;
for (int i = 1; i



1+1+2+2+3+3+4+4++++++100+100=?


100100



Why 1 + 2 + 3. + 100 = 5050
say something


100
1+99=100
2+98+100
……
54+56=100
fifty
A total of 50 100 and the extra 50 is 5050



1+2+3+4+………… +Proof of 100 = 5050


1+100=101
2+99=101
3+98=101
.
101*50=5050



1 + 2 + 3 + 4 +. + 100 = 5050 find 1 + 2 + 3 + 4 +. + n=__
Continue to observe 1 & # 179; = 1 & # 178;, 1 & # 179; + 2 & # 179; = 3 & # 178;, 1 & # 179; + 2 & # 179; + 3 & # 179; = 6 & # 178;, 1 & # 179; + 2 & # 179; + 3 & # 179; + 4 & # 179; = 10 & # 178
Find 1 & # 179; + 2 & # 179; + 3 & # 179; +. + n & # 179=___


This is the result of 1 + 2 + 3 + 4 + 4 + 4 + N + n = (n + 1) n / 21 (n + 1) n / 21 (#35;35;35;35;35;35;35;35;35;35;35;35;35;35;###\\\\#\\\\#\\\\\\\\\\\\\\\\\\\\\\find1 & # 179; + 2 & # 179; + 3 & # 179; +. + n & # 179; = [(n +...)



The following statement is correct ()
A. "5 meters to the East" and "10 meters to the west" are not the opposite. B. if the balloon rises by 25 meters, it means + 25 meters, then - 15 meters means - 15 meters. C. if the temperature drops by 6 ℃, it means - 6 ℃, then + 8 ℃ means 8 ℃ above zero. D. if the height of 1 meter is set as standard 0, and the height of 1.20 meters is set as + 0.20 meters, then - 0.05 meters means 0.95 meters


A. "5 meters to the East" and "10 meters to the west" are the opposite; B. if the balloon rises 25 meters, it means + 25 meters, then - 15 meters means a decrease of 15 meters; C. if the temperature drops 6 ℃, it means - 6 ℃, then + 8 ℃ means an increase of 8 ℃; D. 1.20-1 = 0.20 (meters), 1-0.05 = 0.95 (meters)



A balloon, regardless of its own mass, has a load of G and rises at an acceleration of A. in order to make the balloon descend at the same acceleration, the load of the balloon should be increased?


Let the buoyancy of the balloon be f, and F-G = g / g · a (1) when the balloon rises rapidly
When the load increases g ′, it decreases rapidly, then (G + G ′) - F = (G + G ′) / g · a ′
The solution of simultaneous equations is: G ′ = 2ag / (G-A)