Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
There are 20 students in the class. Half of them play basketball. Two-fifths play volleyball and one-tenth play both basketball and volleyball.  How many students in this class do not play either game?

### Response:
 Nusu ya wanafunzi wanacheza mpira wa kikapu, ambayo inamaanisha wanafunzi 20 / 2 = <<20/2=10>>10.
Wanne wanacheza mpira wa wavu, ambayo inamaanisha (2/5) * 20 = <<2/5*20=8>>8 wanacheza mpira wa wavu.
Mmoja anacheza michezo yote mawili, ambayo inamaanisha 20 / 10 = <<20/10=2>>2 wanacheza michezo yote mawili.
Idadi jumla ya wanafunzi wanaocheza mpira wa kikapu au mpira wa wavu ni 10 + 8 = <<10+8=18>>18 wanafunzi.
Tunajua kuwa wanafunzi 2 wanacheza michezo yote mawili, hivyo inamaanisha wanahesabiwa mara mbili, mara moja katika kila idadi. Ili kurekebisha hili, tunapaswa kutoa 2 kutoka kwa idadi moja. Tutatoa 2 kutoka kwa idadi ya mpira wa kikapu kwa sababu kuna wanafunzi wengi wanaocheza mpira wa kikapu kuliko mpira wa wavu. 18 - 2 = <<18-2=16>>16 wanafunzi wanacheza mpira wa kikapu au mpira wa wavu.
Idadi jumla ya wanafunzi ambao hawachezi mchezo wowote ni 20 - 16 = <<20-16=4>>4 wanafunzi.