Question 39
The following equation is incorrect. Which two signs should be interchanged to correct the equation?
10 + 14 x 20 - 7 ÷ 10 = 40
Solution
Expression : 10 + 14 x 20 - 7 ÷ 10 = 40
(A) : - and ÷
$$\equiv10+14\times20\div7-10=40$$
L.H.S. = $$10+(\frac{14}{7}\times20)-10$$
= $$10+40-10=40=$$ R.H.S.
=> Ans - (A)
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