Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.
234 * 345 * 456 * 567 * 678 * 12
(a) −, +, +, −, =
(b) ÷, −, +, −, =
(c) +, ×, +, −, =
(d) +, −, +, −, =
Sol:
234 * 345 * 456 * 567 * 678 * 12
Put the signs form option D
