Correct

仨

/ sā / 
Strokes

Definition

three (colloquial equivalent of 三个)

Example

As a Numeral

[not used with measure words] three

1
Tāmen
他们
sā
仨
shì
是
yī
一
gè
个
dānwèi
单位
de
的
  
。

The three of them belong to the same unit.

2
Sā
仨
yī
一
duī
堆
liǎ
俩
yī
一
huǒ
伙

in threes and twos

3
Jiěrsā
姐儿
  
仨

three sisters

4
Sā
仨
mántou
馒头

three rolls of steamed bread