Select the correct active \passive form of the given sentence.

The principal has launched a great welfare scheme in secondary school.

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

120 ÷ 80 + 2 × 47 – 14 = 36

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

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

If % means +, @ means -, # means × and $ means ÷, then what is the value of : 26 % 40 @ 56 $ 7 # 2

If ‘÷’ means ‘-’, ‘-’ mean ‘+’, ‘+’ means ‘×’ and ‘×’ means ‘÷’, compute 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

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

72 ÷ 8 × 9 − 36 + 20 = 80