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

12 * 70 * 5 * 5 * 5 * 11 * 2

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

13 × 6 + 24 ÷ 6 - 17 = 91

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

4 + 2 ÷ 7 + 8 × 9 = 25

Select the set in which the numbers are related in the same way as are the numbers of the following sets.

(NOTE : Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 Operations on 13 such as adding/Subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)

(50, 60, 2000)

(20, 30, 200)