confusing math questions • page 5/6 • Off-Topic Discussion • lichess.org

@ZwischenzugX11
BODMAS seems to be more common outside the US. PEMDAS is used in the states. But again they're synonymous. The importance is understanding the shared priority of multiplication & division and addition & subtraction. Multiplication isn't "first" nor is division "first" except as dictated by the notation and the order in which they're written.

10 × 5 ÷ 2, multiplication is first only because we work left-to-right.
10 ÷ 5 × 2, division is first but only for same reason.

@ZwischenzugX11 BODMAS seems to be more common outside the US. PEMDAS is used in the states. But again they're synonymous. The importance is understanding the shared priority of multiplication & division and addition & subtraction. Multiplication isn't "first" nor is division "first" except as dictated by the notation and the order in which they're written. 10 × 5 ÷ 2, multiplication is first only because we work left-to-right. 10 ÷ 5 × 2, division is first but only for same reason.

Anishkanade

#42

https://lichess.org/forum/off-topic-discussion/can-you-answer-these

Ak888

#43

@Anishkanade bro you'll get chat banned. Pls do not advertise bro

Ok @Ak888 bro

@lokomis #41 Understood. Here (where I live) we have learnt and use BODMAS . Thanks for clarifying.

AnonymousChessKing

#46

8/2(2+2)=8/2(2+2) EQUATION BALANCED

nilesh_karthik

#47

factor 3x4y3 – 48y3 ans= 3y3(x2 + 4)(x + 2)(x -2) did anybody know this.

hisokaxhunter edited

#48

Easy question > magnetic(1+1=?)

its 16

Mathematics is a language, just like any other languages. It's expression must be UN-ambiguous.

The QUESTION is wrong.

Use the Windows calculator and input these.

2 + 3 x 2 = 10
That's in Standard Mode (sequential).

2 + 3 x 2 = 8
That's in Scientific Mode (algebraic grouping).

The SAME calculator in Windows outputs 2 different answers because it INTERPRETES the "sentence" differently in different modes.

Mathematics is a language, just like any other languages. It's expression must be UN-ambiguous. The QUESTION is wrong. Use the Windows calculator and input these. 2 + 3 x 2 = 10 That's in Standard Mode (sequential). 2 + 3 x 2 = 8 That's in Scientific Mode (algebraic grouping). The SAME calculator in Windows outputs 2 different answers because it INTERPRETES the "sentence" differently in different modes.