By Interchanging the given two numbers which of the following equation will be incorrect?

8 and 3

This question was previously asked in

DSSSB Physical Education General Section - 2 Aug 2021

Option 3 : 9 × 5 ÷ 3 + 8 - 6 = 17

Option 1: 3 × 5 ÷ 2 + 4 - 8 = 21

interchanging the two numbers 8 and 3 we get:

8 × 5 ÷ 2 + 4 - 3 = 21

applying the BODMAS we get:

8 × 2.5 + 4 - 3 = 21

20 + 4 - 3 = 21

24 - 3 = 21

21 = 21

The given equation is correct.

Option 2: 3 × 6 ÷ 4 + 8 - 5 = 10

interchanging the two numbers 8 and 3 we get:

8 × 6 ÷ 4 + 3 - 5 = 10

applying the BODMAS we get:

8 × 1.5 + 3 - 5 = 10

12 + 3 - 5 = 10

15 - 5 = 10

10 = 10

The given equation is correct.

**Option 3: 9 × 5 ÷ 3 + 8 - 6 = 17**

**interchanging the two numbers 8 and 3 we get:**

**9 × 5 ÷ 8 + 3 - 6 = 17**

**applying the BODMAS we get:**

**9 × 0.625 + 3 - 6 = 17**

**5.625 + 3 - 6 = 17**

**8.625 - 6 = 17**

**2.625 ≠ 17**

**The given equation is incorrect after interchanging 8 and 3.**

Option 4: 9 × 5 ÷ 8 + 3 - 4 = 19

interchanging the two numbers 8 and 3 we get:

9 × 5 ÷ 3 + 8 - 4 = 19

applying the BODMAS we get:

9 × 1.666666 + 8 - 4 = 19

15 + 8 - 4 = 19

23 - 4 = 19

19 = 19

The given equation is correct.

Hence, the correct answer is "Option 3".