Question : Directions: After interchanging the given two numbers and two signs what will be the values of equations (I) and (II) respectively?
+ and –, 6 and 9
I. 6 – 5 × 9 + 8 ÷ 2
II. 6 – 4 + 9 × 5 ÷ 3
Option 1: 17, 5
Option 2: 81, 16
Option 3: 35, 3
Option 4: 54, 5
Correct Answer: 35, 3
Solution :
Given:
I. 6 – 5 × 9 + 8 ÷ 2
II. 6 – 4 + 9 × 5 ÷ 3
Let's solve each equation after interchanging signs and numbers according to the instructions.
On interchanging the signs and numbers in the first equation, we get –
= 9 + 5 × 6 – 8 ÷ 2
= 9 + 5 × 6 – 4
= 9 + 30 – 4
= 39 – 4 = 35
On interchanging the signs and numbers in the second equation, we get –
= 9 + 4 – 6 × 5 ÷ 3
= 9 + 4 – 10
= 13 – 10 = 3
So, 35 and 3 are the required answers to the given equations. Hence, the third option is correct.
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