Mathematical Operations Questions

• If 13*45 = 29 , 24*58 = 41 , 74*32 = 53 , what should 97*47 be?
• In the following question, correct the given equation by interchanging two numbers. 8 x 3 ÷ 4 + 9 – 5 = 16
• If (2)#* 4 = 2 and (4)#* 4 = 16 , then what is the value of A in (6)#* A = 18 ?
• If "+" denotes "divided by", "x" denotes "added to", "÷" denotes "subtracted from" and "–" denotes "multiplied by", then 54 + 162 – 18 x 12 ÷ 6 = ?
• If (3)2 @ 1 * 7 = 98 and (4)2 @ 2 * 16 = 178, then (5)2 @ 3 * 9 = ?
• If "÷" denotes "multiplied by", "+" denotes "subtracted from", "–" denotes "added to" and "x" denotes "divided by", then which of the following equation is true?
• In the following question, correct the equation by interchanging the two signs. 6 ÷ 17 x 51 + 6 – 12 = – 4
• If 25 + 5 ÷ 2 = 40 , and 35 + 5 ÷ 2 = 60 , then 45 + 5 ÷ 2 = ?
• If "–" means "divided by", "+" means "multiplied by", "÷" means "added to", "x" means "subtracted from", then 11 ÷ 6 – 2 + 5 x 3 = ?
• The following equation is incorrect. Which two signs should be interchanged to correct the equation? 15 x 12 + 40 ÷ 40 - 6 = 21
• If "K" denotes "multiplied by", "M" denotes "subtracted from", "J" denotes "added to" and "L" denotes "divided by", then 44 M 24 K 56 L 14 J 60 = ?
• If "A" denotes "subtracted from", "B" denotes "added to", "C" denotes "divided by", "D" denotes "multiplied by", then which of the following statement is correct?
• In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question? 642 x 6 ÷ 25 + 4 = ?
• In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question? 24 x 6 - 8 + 2 = ?
• In a certain code language, '-' represents'+', '+' represents 'x', 'x' represents '÷' and '÷'represents '-'. Find out the answer to the following question. 2 - 12 + 10 x 5 ÷ 12 = ?