Which two signs should be interchanged to make the given equation correct?

13 × 6 + 24 ÷ 6 - 17 = 91

Select the option that is related to the third term in the same way as the second term is related to the first term and the sixth term is related to the fifth term.

5 : 127 :: 9 : ? :: 7 : 247

Select the figure that will replace the question mark (?) in the following figure series.

Which two numbers and two signs should be interchanged in the following equation to make it correct?

4 + 2 ÷ 7 + 8 × 9 = 25