Which of the following pairs of numbers and signs, when their positions are interchanged, will correctly solve the given mathematical equation?
27 × 48 + 4 – 12 ÷ 4 = 63
(a) 48 and 12, – and ×
(b) 27 and 4, – and ÷
(c) 48 and 12, + and ×
(d) 48 and 12, + and –
Sol:
Solve by option (c)
27 × 48 + 4 – 12 ÷ 4 = 63
⇒27 + 12 × 4 – 48 ÷ 4
⇒27 + 48 – 12 =63
