If ‘×’ means addition, ‘-’ means division, ‘÷’ means subtraction and ‘+’ means multiplication, then which of the equations is correct?

Option 3 : 16 + 5 – 10 × 4 ÷ 3 = 9

•We have first equation as: 16 × 5 ÷ 10 + 4 – 3 = 19.

Now, according to the pattern given we can write the 1st equation as:

16 × 5 ÷ 10 + 4 – 3 = 16 + 5 – 10 × 4 ÷ 3 = 7.66 ≠ 19.

So, 1st equation is incorrect.

• We have 2nd equation as: 16 + 5 ÷ 10 × 4 – 3 = 9.

Now, according to the pattern given we can write the 2nd equation as:

16 + 5 ÷ 10 × 4 – 3 = 16 × 5 – 10 + 4 ÷ 3 = 71.33.

So, 2nd equation is incorrect.

• We have 3rd equation as: 16 + 5 – 10 × 4 ÷ 3 = 9.

Now, according to the pattern given we can write the 3rd equation as:

16 + 5 – 10 × 4 ÷ 3 = 16 × 5 ÷ 10 + 4 – 3 = 9.

So, 3rd equation is correct.

• We have 4th equation as: 16 – 5 × 10 ÷ 4 + 3 = 12.

Now, according to the pattern given we can write the 4th equation as:

16 – 5 × 10 ÷ 4 + 3 = 16 ÷ 5 + 10 – 4 × 3 = 1.2.

So, 4th equation is incorrect.

Thus, correct option is 16 + 5 – 10 × 4 ÷ 3 = 9.