BASIC OPERATION AND FACTORISATION (CDS)

Total Questions: 77

11. Solve the following equation [2019 (I) Morning Shift]

Correct Answer: (a)
Solution:


12. Solve the following equation [2019 (I) Morning Shift]

Correct Answer: (b) 2
Solution:


13. Solve the following equation [2019 (I) Morning Shift]

Correct Answer: (d) Each fraction is equal to 1/2 only
Solution:

14. If (4a + 7b)(4c - 7d) = (4a - 7b)(4c + 7d) then which one of the following is correct? [2019 (I) Morning Shift]

Correct Answer: (a)
Solution:

15. Solve the following equation [2019 (I) Morning Shift]

Correct Answer: (a) 1
Solution:

16. Solve the following equation [2019 (I) Morning Shift]

Correct Answer: (a) 1/y
Solution:

17. Solve the following equation [2018 (II) Evening Shift]

Correct Answer: (a) 2
Solution:

18. Solve the following equation [2018 (II) Evening Shift]

Correct Answer: (b)
Solution:We know that,

19. The sum of all possible products taken two at a time out of the numbers ±1, ±2, ±3, ±4 is [2018 (II) Evening Shift]

Correct Answer: (b) –30
Solution:Let ±1, ±2, ±3, ±4 are the roots of the polynomials

20. The remainder when 3x³ - 2x² y - 13xy² + 10y³ is divided by (x - 2y) is equal to [2018 (II) Evening Shift]

Correct Answer: (a) 0
Solution:Let f (x)