mathematical operation Model Questions & Answers, Practice Test for ssc mts paper 1 2023

Answer: (d)

Answer: (b)

9² – 4² – 3² = 56

7² – 2² – 1² = 44

11² – 5² – 7² = 47

Answer: (b)

If S → ×, V → –, M → +, L → ÷

then, 343 L 7 S 6 V 94 M 11

= 343 ÷ 7 × 6 – 94 + 11

= 49 × 6 – 94 + 11

= 294 – 94 + 11

= 305 – 94 = 211

Answer: (a)

17 – 15 × 5 = 250

Inter-changing sign (- → × and × → -)

= 17 × 15 – 5 = 255 – 5 = 250

So, the equation is correct.

Answer: (c)

By making the interchanges given in (a), we get the equation as 2 – 5 + 3 = 0 or 0 = 0 which is true.

By making the interchanges given in (b), we get the equation as 3 – 2 + 5 = 0 or 6 = 0, which is false.

By making the interchanges given in (c), we get the equation as 5 – 3 + 2 = 4 or 4 = 0 which is not true.

So, the answer is (a).