Question : Directions: Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.
121 * 11 * 99 * 11 * 77 * 79
Option 1: ×, −, ÷, +, =
Option 2: ÷, −, ÷, ×, =
Option 3: ÷, −, ×, +, =
Option 4: ÷, −, ÷, +, =
Correct Answer: ÷, −, ÷, +, =
Solution :
Given:
121 * 11 * 99 * 11 * 77 * 79
Let's check the given options –
First option:
×, −, ÷, +, =
⇒ 121 × 11 − 99 ÷ 11 + 77 = 79
Solving the L.H.S. of the equation –
= 1331 − 9 + 77
= 1399 ≠ 79
Second option:
÷, −, ÷, ×, =
⇒ 121 ÷ 11 − 99 ÷ 11 × 77 = 79
Solving the L.H.S. of the equation –
= 11 − 9 × 77
= 11 − 693
= –682 ≠ 79
Third option:
÷, −, ×, +, =
⇒ 121 ÷ 11 − 99 × 11 + 77 = 79
Solving the L.H.S. of the equation –
= 11 − 1089 + 77
= 1001 ≠ 79
Fourth option:
÷, −, ÷, +, =
⇒ 121 ÷ 11 − 99 ÷ 11 + 77 = 79
Solving the L.H.S. of the equation –
= 11 − 9 + 77
= 79
So, only the fourth option satisfies the given equation. Hence, the fourth option is correct.
Related Questions
Know More about
Staff Selection Commission Sub Inspector ...
Result | Eligibility | Application | Selection Process | Cutoff | Admit Card | Preparation Tips
Get Updates Brochure
Your Staff Selection Commission Sub Inspector Exam brochure has been successfully mailed to your registered email id “”.
