Maths Yadi A * B = 2 (a+b) Ho To 5 * 2 = ?

यदि a * b = 2(a+b) हो तो 5 * 2 = ? - - Yadi A * B = 2 (a+b) Ho To 5 * 2 = ?  Maths in hindi,  simplification  10 question answers in hindi pdf   14 questions in hindi, Know About 3 Maths online test Maths notes in hindi quiz book     20