3,作为一个阿拉伯数字,它的汉字大写有“叁”和“弎”,英文是three。
三:数词,通常与量词同用。如三种,三个等。[2]
3(3)
是圆周率约等到个位的数字。
能否被3整除的数的判断方法是:把该数中的所有数字加起来(又称数码之和),若这个结果能够被3整除,则该数字能被3整除(无一例外)。
次方 | 数 |
---|---|
1 | 3 |
2 | 9 |
3 | 27 |
4 | 81 |
5 | 243 |
6 | 729 |
7 | 2,187 |
8 | 6,561 |
9 | 19,683 |
10 | 59,049 |
11 | 177,147 |
12 | 531,441 |
13 | 1,594,323 |
14 | 4,782,969 |
15 | 14,348,907 |
16 | 43,046,721 |
17 | 129,140,163 |
18 | 387,420,489 |
19 | 1,162,261,467 |
20 | 3,486,784,401 |
21 | 10,460,353,203 |
22 | 31,381,059,609 |
23 | 94,143,178,827 |
24 | 282,429,536,481 |
25 | 847,288,609,443 |
26 | 2,541,865,828,329 |
27 | 7,625,597,484,987 |
28 | 22,876,792,454,961 |
29 | 68,630,377,364,883 |
30 | 205,891,132,094,649 |
31 | 617,673,396,283,947 |
32 | 1,853,020,188,851,841 |
…… |
次方 | 数 |
---|---|
1 | 3 |
2 | 9 |
3 | 27 |
4 | 81 |
5 | 243 |
6 | 729 |
7 | 2,187 |
8 | 6,561 |
9 | 19,683 |
10 | 59,049 |
11 | 177,147 |
12 | 531,441 |
13 | 1,594,323 |
14 | 4,782,969 |
15 | 14,348,907 |
16 | 43,046,721 |
17 | 129,140,163 |
18 | 387,420,489 |
19 | 1,162,261,467 |
20 | 3,486,784,401 |
21 | 10,460,353,203 |
22 | 31,381,059,609 |
23 | 94,143,178,827 |
24 | 282,429,536,481 |
25 | 847,288,609,443 |
26 | 2,541,865,828,329 |
27 | 7,625,597,484,987 |
28 | 22,876,792,454,961 |
29 | 68,630,377,364,883 |
30 | 205,891,132,094,649 |
31 | 617,673,396,283,947 |
32 | 1,853,020,188,851,841 |
…… |
乘数 | 乘积 |
---|---|
1 | 3 |
2 | 6 |
3 | 9 |
4 | 12 |
5 | 15 |
6 | 18 |
7 | 21 |
8 | 24 |
9 | 27 |
10 | 30 |
11 | 33 |
12 | 36 |
13 | 39 |
14 | 42 |
15 | 45 |
16 | 48 |
17 | 51 |
18 | 54 |
19 | 57 |
20 | 60 |
21 | 63 |
22 | 66 |
23 | 69 |
24 | 72 |
25 | 75 |
...... | ...... |
乘数 | 乘积 |
---|---|
1 | 3 |
2 | 6 |
3 | 9 |
4 | 12 |
5 | 15 |
6 | 18 |
7 | 21 |
8 | 24 |
9 | 27 |
10 | 30 |
11 | 33 |
12 | 36 |
13 | 39 |
14 | 42 |
15 | 45 |
16 | 48 |
17 | 51 |
18 | 54 |
19 | 57 |
20 | 60 |
21 | 63 |
22 | 66 |
23 | 69 |
24 | 72 |
25 | 75 |
...... | ...... |
3(3)
三生万物:在道教三表示万物。老子的《道德经》第四十二章:道生一,一生二,二生三,三生万物。万物负阴而抱阳,冲气以为和。人之所恶,唯孤、寡、不谷,而王公以为称。故物或损之而益,或益之而损。人之所教,我亦教之。强梁者不得其死,吾将以为教父。
小三:被指代插足别人爱恋、婚姻关系的第三者。