Find out the two signs to be interchanged for making following equation correct.
5 + 3 x 66 - 11 ÷ 8 = 15

If "+" means "-", "x" means “÷", "÷" means "+" and "-" means "x", then-
105 x 3 – 16 + 9 ÷ 11 = ?

Interchange two mathematical operators and balance the incorrect equation given below:
16 – 24 × 2 ÷ 10 + 104=0

Which two signs should be interchanged to make the given equation correct?
16 + 3 – 5 x 2 ÷ 4 = 9

If ‘+’ means ‘÷’, and ‘-‘ means ‘x’, ‘x’ means ‘+’ and ‘÷’ means ‘-‘ then find the value of  7 – 2 × 14 ÷96+12 =?

Which two signs should be interchanged to make the given equation correct?
( 72 ÷ 18) + 30×8 -4 =20

Select the option in which the numbers do NOT share the same relationship as that shared by the given pair of numbers.
(23, 115, 207)

The ratio of the present age of the two brothers is 1: 2. And 5 years ago this ratio was 1: 3. So what will be the ratio of their age after 5 years.