Qhov teeb meem yog hais txog mathematician yawg uas hais lus riddles

2024 Tus sau: Malcolm Clapton | [email protected]. Kawg hloov kho: 2023-12-17 03:58

Pab koj tus tub xeeb ntxwv paub seb lub sijhawm taug kev yuav ua li cas.

Ib tug tub xeeb ntxwv mus cuag yawg Semyon, tus kws qhia lej so haujlwm, thiab nug:

- Txiv yawg, qhia kuv, lub sijhawm twg?

- Ntxiv ¼ ntawm lub sijhawm los ntawm ib tag hmo mus rau tam sim no, txij li ½ txij tam sim no mus rau ib tag hmo.

-Auj! Zoo li to taub. Thaum twg peb yuav mus sab nraud?

- Ntxiv 10 feeb rau lub sijhawm tau txais, ces cia mus.

Lub sijhawm twg yog hnub twg thiab ob lub sijhawm twg mus taug kev?

Muaj 24 teev nyob rau ib hnub. Cia x sij hawm dhau ib tag hmo mus rau tam sim no, ces txij tam sim no mus rau ib tag hmo muaj 24 zaug. Yog tias koj ntxiv ib lub hlis twg ntawm lub sijhawm los ntawm ib tag hmo mus rau tam sim no thiab ib nrab ntawm lub sijhawm tam sim no mus rau ib tag hmo, koj tau txais x, lub sijhawm tam sim no. Cia peb sau nws nrog ib qho kev sib npaug thiab daws nws:

¼ x + ½ x (24 - x) = x

x / 4 + 12 - x / 2 = x

x - x / 4 + x / 2 = 12

4x - x + 2 = 48

5 x48

x = 9.6

Nws hloov tawm tias 9, 6 teev, lossis 9 teev 36 feeb tau dhau los ntawm ib tag hmo rau tam sim no, qhov no yog lub sijhawm tam sim no. Thiab yawm txiv thiab tub xeeb ntxwv yuav mus taug kev hauv 10 feeb, uas yog, thaum 9 teev 46 feeb.

Qhia teb Nthuav teb