Number Pronouns

 Number pronouns can be formed by adding affixes ke- .. -nya to the collective numbers. These forms can also have a reduplicated base with or without prefix ke-.

Kedua anak itu baik hatinya. Kedua-duanya baik hatinya. Dua-duanya baik hatinya. Keduanya baik hatinya.

Those two boys are very kind. Both of them are very kind. Both of them are very kind. Both of them are very kind.

Some indefinite numbers can occur as pronouns also with suffix -nya:
semuanya – all of them
segalanya – all of them
seluruhnya – all of it, the whole

Masing-masing which can occur as number pronoun does not take suffix -nya. It means ‘each of them’.