Mathematical Op...

If the given signs - and x, and numbers 3 and 6 are interchanged, which one of the following equations would be correct?

If 2010 means200, 8 ÷ 4 means 12, 6 × 2 means 4, then100 − 10 × 1000 ÷ 1000 + 100 × 10 = ?

If ′′x′′ stands for ′′+′′; ′′y′′stands for ′′−′′; ′′z′′ stands for ′′÷′′ and ′′w′′stands for ′′×′′, then 10w 2x 5y 5 = ?

What will be the correct mathematical signs that can be inserted in the following equations? 25 − 5 − 8 − 60 = 100

If A + D > C + E, C + D = 2B and B + E > C + D, it necessarily follows that.

If the + and × signs of the following equations are interchanged, what will be the correct equation?

If ′A′ means ′÷′′B′ means ′+′, ′C′ means ′×′ and ′D′ means ′−′, then 12 C 4 A 24 D 10 B 1 =?

If ′+′ stands for ′×′; ′×′ stands for ′÷′;′÷′ stands for ′−′ and ′−′ stands for ′+′ then 2 − 8 × 2 + 6 ÷ 7 = ?

If ′a′ stands for ′÷′, ′b′ stands for ′×′, ′c′ stands for ′+′ and ′d′ stands for′−′ then 5 c 20 a 4 b 2 d 10 =?