If sin(x + y) = cos(x – y), then the value of

What will be the value of expression if the signs ‘(-)’ and ‘(+)’ are interchanged?

75 + 42 – 6 × 56 ÷ 7 + 6 × 3 – 2

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

490 ÷ 70 + 5 × 28 – 15 = 48

If '+' means '÷', '-' means ' X ', ' X ' means '+', '÷' means '-', what will come in place of the question mark(?)?

If + means ÷, × means –, – means ×,  ÷ means +, then 32 + 16 – 13 x 18 ÷ 2 = ?

If, 'A $ B' means 'A + B', 'A & B' means 'A ÷ B', 'A % B' means 'A X B' and 'A # B' means 'A - B', then what is the value of the given equation?

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

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

32 * 366 * 6 * 2 * 134 = 20