Which of the following character placed at the sign of question mark (?) to complete the matrix? 4C | 2B | 3A 28B | ? | 45B 7B | 5A | 15C

Which of two signs when interchanged makes the following equation correct? 7 ÷ 8 × 2 − 16 + 2 = 15

Which of the following two signs needs to be interchanged to make the given equation correct? 24 − 8 / 4 + 5 × 3 = 14

In an examination, a student gets 4 marks for every correct answer, 1 for every unattempted question and 0 for every wrong answer. If there are 30 questions, which of the following total scores is no…

If C denotes '+', D denotes '×', E denotes '÷' and F denotes '−', then which of the following is true?

Assign correct mathematical signs and find the missing number (?), if 8 2 5 = 20 9 3 6 = 18 then 6 3 9 = ?