A train crosses a pole in 12 sec, and a bridge of length

If the signs '+' and ' ÷ 'and the numbers '2' and '4' are interchanged, which one of the following four equations would be correct?

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

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

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

If the following interchanges are made in signs, then what would be the value of the following expression?

48 X 63 + 2 ÷ 9 - 35 

Statements:

B ≥ K ≤ C; Q > K > X; M = Q < P

Conclusions:

I. P > X

II. C ≥ M

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

After interchanging the given two signs and two numbers, what will be the value of the following expression?

÷ and +; 6 and 25

If '@' means ( X ), '$' means (-), '#' means (÷), and '%' means (+), then what is the value of the expression: [{(84 $ 20) # (14 % 18)} @ 12]