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- Most Important Multiple Choice Questions
- Online Algebra Exercise with Correct Answer Key and Solutions
- Useful for all Competitive Exams
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- Question 1 of 20
1. Question
What value should come in place of the question mark?
=?Hint
Let
⇒
⇒
Therefore,
= 
⇒ x – y = 22 or x = 25, y = 3
Thus,
Again, let
⇒
⇒
, 
⇒ p – q = 1 or p = 4, q = 3
Thus,
Now,
=
=
=
- Question 2 of 20
2. Question
What value should come in place of the question mark?
=?Hint
- Question 3 of 20
3. Question
What value should come in place of the question mark?
1.236 × 10¹⁵ – 5.23 × 10¹⁴ =?Hint
=
=
- Question 4 of 20
4. Question
What value should come in place of the question mark?
Hint
Given exp.
- Question 5 of 20
5. Question
What value should come in place of the question mark?
=?Hint
Given exp.
- Question 6 of 20
6. Question
What value should come in place of the question mark?
=?Hint
We rationalise the denominator of each
and 
Thus
= 5 - Question 7 of 20
7. Question
What value should come in place of the question mark?
9821 – [48 + {12 × (153 + 24)}] =?Hint
9821 – [48 + {12 × 177}]
= 9821 – [48 + 2124]
= 9821 – 2172 = 7649.
- Question 8 of 20
8. Question
What value should come in place of the question mark?
=?Hint
=
…… 
=
+ 
- Question 9 of 20
9. Question
What value should come in place of the question mark?
=?Hint
=
- Question 10 of 20
10. Question
What value should come in place of the question mark?
=?Hint
=
=
=
=
=
- Question 11 of 20
11. Question
What value should come in place of the question mark?
Hint
Let
Then, 8x – 7 × 2 = 49 – 48 + x²
⇒ 8x – 14 = 1 + x²
⇒ x² – 8x + 15 = 0
⇒ (x – 3)(x – 5) = 0
⇒ x = 3 or x = 5.
- Question 12 of 20
12. Question
What value should come in place of the question mark?
Hint
(where a = 469, b = 174) - Question 13 of 20
13. Question
What value should come in place of the question mark?
= ?Hint
=
=
- Question 14 of 20
14. Question
What value should come in place of the question mark?
= ?Hint
- Question 15 of 20
15. Question
What value should come in place of the question mark?
= ?Hint
=
- Question 16 of 20
16. Question
What value should come in place of the question mark?
Hint
Given exp.
- Question 17 of 20
17. Question
What value should come in place of the question mark?
= ?Hint
- Question 18 of 20
18. Question
What value should come in place of the question mark?
(17)³˙⁵ × (17)? = 17⁸Hint
Let (17)³˙⁵ × (17)x = 17⁸.
Then, (17)³˙⁵ + x = 17⁸.
∴ 3.5 + x = 8
⇒ x = (8 – 3.5)
⇒ x = 4.5
- Question 19 of 20
19. Question
What value should come in place of the question mark?
=?Hint
- Question 20 of 20
20. Question
What value should come in place of the question mark?
=?Hint
= 0.4 + 1.1 = 1.5