Mathematical Operations Questions

• If 19 (36) 13 and 37 (81) 28, then what is the value of 'A' in 43 (A) 38?
• If "–" means "added to", "+" means "divided by", "÷" means "multiplied by", "x" means "subtracted from", then 13 + 12 x 9 ÷ 3 – 6 = ?
• The following equation is incorrect. Which two signs should be interchanged to correct the equation? 1 ÷ 14 x 30 + 20 - 10 = 12
• In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question? 72 x 9 - 14 + 2 = ?
• If the signs + and / and the numbers 2 and 4 are interchanged, which one of the following four equations would be correct?
• If "+" means "minus", "x" means "divided by", "÷" means "plus" and "-" means "multiplied by", then 81 x 9 + 10 – 6 ÷ 5 = ?
• If, 1*2= 1, 2*3= 1 and 3*4= 5, Then find the value of 7*9= ?
• In the following question, correct the equation by interchanging two signs. 6 + 8 ÷ 4 – 4 = 8
• If 4 x 9 x 3 = 4 and 5 x 3 x 1 = 3, then 9 x 9 x 7 = ?
• In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question? 25 + 10 ÷ 240 x 16 = ?
• If "+" means "minus", "x" means "divided by", "÷" means "plus" and "-" means "multiplied by", then 38 x 2 – 6 + 19 ÷ 35 = ?
• Which of the following interchanges in signs and numbers will make the given equation correct? 8 x 9 + 2 = 74
• In a certain code language, 'x' represents '+', '÷' represents 'x', '-' represents '÷' and '+' represents '-'. Find out the answer to the following question. 5 + 10 x 21 ÷ 5 - 15 = ?
• The following equation is incorrect. Which two signs should be interchanged to correct the equation? 10 x 4 + 5 - 30 ÷ 6 = 31
• In this question, some equations are solved on the basis of a certain system. On the same basis find out the correct answer from amongst the four alternatives for the unsolved equation. 15 x 26 = 6512 29 x 36 = 6923, 46 x 54 = ?
• In the following problem, '=' stands for '÷' , '+' stands for '' , 'x' stands for '=', '' stands for '+' and '÷' stands for 'x'. Find the correct equation.
• If (─) stands for division, (+) stands for multiplication, (÷) stands for subtraction and (×) stands for addition, which one of the following equations is correct?
• If, 4x3=14; 5x4=18; 6x5=22; Then find the value of 7x6=?
• In the following question, by using which mathematical operator will the expression become correct? 18 ? 6 ? 9 ? 27
• If 18 (9) 3 and 36 (30) 5, then what is the value of A in 19 (A) 18?