Which of the given frequency polygons represents the

Select the correct combination of mathematical signs that can sequentially replace ‘*’ sign and balance the equation given below.

If × stands for 'addition', ÷ stands for 'subtraction', + stands for 'multiplication' and - stands for 'division', then 31 × 18 ÷ 20 - 5 + 9 = ?

Which two signs should be interchanged to make the below equation mathematically correct?

9 ÷ 3 + 6 – 6 × 2 = 30

Which two signs should we interchange inorder to make the given equation true?

36 × 5 - 84 ÷ 4 + 50 = 151

Which of the following interchange of numbers and mathematical signs would make the given equation correct?

72 ÷ 8 × 9 − 36 + 20 = 80

If '#' means ' - ', '@' means '+', '$' means '÷' and '&' means ' X ', then what is the value of the following expression?

72 # 91 $ 7 & 4 @ 18

What will be the value of expression if the numbers/digits ‘(42)’ and ‘(16)’ are interchanged?

16 - 32 ÷ 8 × 12 + 11 + 42

If the ‘-’ and ‘×’ are interchanged, What will be the value of the following equation?

34 × 22 + 192 ÷ 12 – 8

Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.