What will be the weed control efficiency (%). if the number of weeds in clodinafop treated plot is 190/ m² and that in a control plot is 361/m²?

If ‘÷’ means ‘-’, ‘-’ mean ‘+’, ‘+’ means ‘×’ and ‘×’ means ‘÷’, compute the value of the expression:

If '÷' means '+', '+' mean '-', 'x' means '÷' and '-' means 'x', then what will be the value of the given expression:

12 – 6 x 2 + 5 ÷ 9

Read the directions carefully and answer the following questions.

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

Select the correct combination of the mathematical signs to replace the ‘@’ symbols in the below equation and thereby balance it:

If ‘%’ means (÷), ‘&’ means (+), ‘$’ means (×), and ‘@’ means (-), then what is the value of the expression:

Which two signs should be interchanged in the following equation to make it correct:

490 ÷ 70 + 5 × 28 – 15 = 48

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

16 - 32 ÷ 8 × 12 + 11 + 42