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

171 ÷ 3 – 16 + 72 × 412 = 572

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

17 × 4 + 6 ÷ 2 – 27 = 92

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

(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.)

(13, 17, 23)

(8, 12, 18)

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

7 * 5 * 4 * 2 * 3 * 7