algebraic expressions Model Questions & Answers, Practice Test for ssc cgl tier 1 2023
ssc cgl tier 1 2023 SYLLABUS WISE SUBJECTS MCQs
Number System
Ratio Proportion & Partnership
Averages
Percentages
Profit & Loss
Time & Work
Time & Distance
Simple Interest & Compound Interest
Mensuration: Area & Volumes
Algebraic Expressions
Linear Equations
Squareroots & Cuberoots
Directions :
In each question one or more equation(s) is (are) provided. On the basis of these you have
- if p = q
- if p > q
- if q > p
- if p ≥ q
- if p ≥ q
(i) $q^2$–I1q + 30 = 0 (ii) $2p^2$ – 7p + 6 = 0
Answer: (d)
q = 5, 6 & p = $3/2$ , 2
Directions :
In each of the following questions there are two equations. Solve them and give answer
- if P < Q
- if P > Q
- if P ≤ Q
- if P ≥ Q
- if P = Q
I. $3P^2$ – 10P + 7 = 0
II. $15Q^2$ – 22Q + 8 = 0
Answer: (e)
I. $3P^2$ – 10P + 7 = 0
$3P^2$ – 3P – 7P + 7 = 0
3P (P – 1) – 7 (P – 1) = 0
⇒ (3P – 7) ( P – 1) = 0
⇒ P = $7/3$, 1
II. $15Q^2$ – 22Q + 8 = 0
$15Q^2$ – 10Q – 12Q + 8 = 0
5Q (3Q – 2) – 4(3Q – 2) = 0
(5Q – 4) (3Q – 2) = 0
⇒ Q = $4/5 , 2/3$
∴P > Q
Directions :
In each of these questions two equations are given. You have to solve these equations and Give answer
- if x < y
- if x > y
- if x =y
- if x ≥ y
- if x ≤ y
I. $3x^2$ + 7x = 6
II. 6($2y^2$ + 1) = 17y
Answer: (b)
I. $3x^2$ + 7x – 6 = 0
or, $3x^2$ + 9 x – 2x – 6 = 0
or, (x + 3) (3x – 2) = 0
or, x = – 3, $2/3$
II. 6($2y^2$ + 1) = 17y
or, $12y^2$ + 6 – 17y = 0
or, $12y^2$ – 9y – 8y + 6 = 0
or, (4y – 3) (3y – 2) = 0
or, y=$3/4,2/3$
Hence, y ≥ x
Directions :
For the two given equations I and II give answer
- if p is greater than q
- if p is smaller than q
- if p is equal to q
- if p is either equal to or greater than q
- if p is either equal to or smaller than q.
I.$6p^2$ + 5p +1 = 0
II. $20q^2$ + 9q = –1
Answer: (e)
I. $6p^2$ + 5p + 1 = 0
or, $6p^2$ + 3p + 2p + 1 = 0
or, 3p(2p + 1) + 1 (2p + 1) = 0
or, (3p + 1) (2p + 1) = 0
Hence, p = $-1/3,-1/2$
II. $20q^2$ + 9q + 1 = 0
or, $20q^2$ + 5q + 4q + 1 = 0
or, 5q(4q + l) + 1(4q + 1) = 0
or, (5q + 1)(4q + l) = 0
Hence, q = $-1/5,-1/4$ Thus, p < q.
Directions:
In each question, one/two equations are provided. On the basis of these you have to find out the relation between p and q.
- if p = q
- if p > q
- if q > p
- if p ≥ q, and
- if q ≥ p
I. $2p^2$ + 12p+ 16 = 0
II.$2q^2$ + 14q + 24 = 0
Answer: (e)
I. $2p^2$ – 12p + 16 = 0
II. $2q^2$ + 14q + 24 = 0
or, $p^2$ – 6p + 8 = 0
or, (p – 4) (p – 2) = 0
or, $q^2$ + 7q + 12 = 0
or, (q + 4) (q + 3) = 0
p = + 4 or, + 2
∴q = – 3 or, – 4
When p = + 2, q = – 3, then, p > q
When p = + 4, q = – 4, then, p > q
When p = + 4, q = – 3, then, p > q
Hence p > q
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