2 sentences for 有数 (yǒu​shù)

1. 他在北京的朋友是有数的。

   tā zài Běi​jīng de péng​you shì yǒu​shù de.

   The number of friends he has in Beijing is limited.

   Source: Dong Chinese Dictionary

2. 关于项目的进度，我心里有数。

   guān​yú xiàng​mù de jìn​dù, wǒ xīn​li yǒu​shù.

   I have a good idea of where we stand with the project's progress.

   Source: Dong Chinese Dictionary