Sum of squares of three consecutive numbers is 770. Find

If ‘A’ means (÷), ‘B’ means (×), ‘C’ means (+), and ‘D’ means (-), then ____ is 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

Select the different combination of mathematical signs that can sequentially replace the # sign and balance the given equation.

63 # 9 # 52 # 10 # 4 = 19

In how many different ways can the letters of the word 'COMPUTER' be arranged in such a way that the vowels always come together?

Which among the given operators should replace the “%” (in the same order) in the given expression below:

5 % 10 % 5 % 36 % 15 % 6

Select the correct combination of mathematical signs that can sequentially replace the $ signs and make the equation correct.