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Objective Questions with Answer for Maths - मुफ्त [PDF] डाउनलोड करें

Last updated on Feb 12, 2026

पाईये मात्रात्मक रूझान उत्तर और विस्तृत समाधान के साथ MCQ प्रश्न। इन्हें मुफ्त में डाउनलोड करें मात्रात्मक रूझान MCQ क्विज़ Pdf और अपनी आगामी परीक्षाओं जैसे बैंकिंग, SSC, रेलवे, UPSC, State PSC की तैयारी करें।
Question 1:
Maths

If a % b = a² - b² and a % b = 63, find a and b.  (SSC CGL 12 Sept, 2025 Shift - 3)
 

9, 6
 

10, 7

8, 1

7, 4

यदि a%b=a2−b2a \% b = a^2 - b^2a%b=a2−b2 तथा a%b=63a \% b = 63a%b=63 है, तो aaa और bbb के मान ज्ञात कीजिए। (SSC CGL 12 Sept, 2025 Shift - 3)

9, 6

10, 7

8, 1

7, 4

View Answer & Solution
Correct Answer: C (8, 1)
Solution:

Shortcut Trick

Given:
If a % b = a² - b² and a % b = 63
Now, we check by options.
Option (c): 8, 1
8 - 1 = 64 - 1 = 63
So, the value of a = 8 and b = 1

 

 

Detailed Solution:

Given:
a%b=a2−b2a \% b = a^2 - b^2a%b=a2−b2
and
a%b=63a \% b = 63a%b=63

So,
a2−b2=63a^2 - b^2 = 63a2−b2=63

Now use identity:
a2−b2=(a−b)(a+b)a^2 - b^2 = (a-b)(a+b)a2−b2=(a−b)(a+b)

⇒ (a−b)(a+b)=63(a-b)(a+b) = 63(a−b)(a+b)=63

Now take factors of 63:
63=7×963 = 7 \times 963=7×9

Let,
a−b=7a-b = 7a−b=7
a+b=9a+b = 9a+b=9

Add both equations:
2a=162a = 162a=16
⇒ a=8a = 8a=8

Substitute:
8−b=78 - b = 78−b=7
⇒ b=1b = 1b=1

a = 8, b = 1

दिया है:
a%b=a2−b2a \% b = a^2 - b^2a%b=a2−b2
और
a%b=63a \% b = 63a%b=63

इसलिए,
a2−b2=63a^2 - b^2 = 63a2−b2=63

अब सूत्र लगाएँ:
a2−b2=(a−b)(a+b)a^2 - b^2 = (a-b)(a+b)a2−b2=(a−b)(a+b)

⇒ (a−b)(a+b)=63(a-b)(a+b) = 63(a−b)(a+b)=63

63 के गुणनखंड लेते हैं:
63=7×963 = 7 \times 963=7×9

मान लेते हैं:
a−b=7a-b = 7a−b=7
a+b=9a+b = 9a+b=9

दोनों को जोड़ें:
2a=162a = 162a=16
⇒ a=8a = 8a=8

अब मान रखें:
8−b=78 - b = 78−b=7
⇒ b=1b = 1b=1

अंतिम उत्तर: a=8, b=1a = 8,\ b = 1a=8, b=1

Question 2:
Maths

If a % b = a² - b² and a % b = 63, find a and b.  (SSC CGL 12 Sept, 2025 Shift - 3)
 

9, 6
 

10, 7

8, 1

7, 4

यदि a%b=a2−b2a \% b = a^2 - b^2a%b=a2−b2 तथा a%b=63a \% b = 63a%b=63 है, तो aaa और bbb के मान ज्ञात कीजिए। (SSC CGL 12 Sept, 2025 Shift - 3)

9, 6

10, 7

8, 1

7, 4

View Answer & Solution
Correct Answer: C (8, 1)
Solution:

Shortcut Trick

Given:
If a % b = a² - b² and a % b = 63
Now, we check by options.
Option (c): 8, 1
8 - 1 = 64 - 1 = 63
So, the value of a = 8 and b = 1

Detailed Solution:

Given:
a%b=a2−b2a \% b = a^2 - b^2a%b=a2−b2
and
a%b=63a \% b = 63a%b=63

So,
a2−b2=63a^2 - b^2 = 63a2−b2=63

Now use identity:
a2−b2=(a−b)(a+b)a^2 - b^2 = (a-b)(a+b)a2−b2=(a−b)(a+b)

⇒ (a−b)(a+b)=63(a-b)(a+b) = 63(a−b)(a+b)=63

Now take factors of 63:
63=7×963 = 7 \times 963=7×9

Let,
a−b=7a-b = 7a−b=7
a+b=9a+b = 9a+b=9

Add both equations:
2a=162a = 162a=16
⇒ a=8a = 8a=8

Substitute:
8−b=78 - b = 78−b=7
⇒ b=1b = 1b=1

a = 8, b = 1

दिया है:
a%b=a2−b2a \% b = a^2 - b^2a%b=a2−b2
और
a%b=63a \% b = 63a%b=63

इसलिए,
a2−b2=63a^2 - b^2 = 63a2−b2=63

अब सूत्र लगाएँ:
a2−b2=(a−b)(a+b)a^2 - b^2 = (a-b)(a+b)a2−b2=(a−b)(a+b)

⇒ (a−b)(a+b)=63(a-b)(a+b) = 63(a−b)(a+b)=63

63 के गुणनखंड लेते हैं:
63=7×963 = 7 \times 963=7×9

मान लेते हैं:
a−b=7a-b = 7a−b=7
a+b=9a+b = 9a+b=9

दोनों को जोड़ें:
2a=162a = 162a=16
⇒ a=8a = 8a=8

अब मान रखें:
8−b=78 - b = 78−b=7
⇒ b=1b = 1b=1

अंतिम उत्तर: a=8, b=1a = 8,\ b = 1a=8, b=1

Question 3:
Maths

Let m1, m2 be the slopes of two adjacent sides of a square of side a such that \((10(\cos \alpha-\sin \alpha), 10(\sin \alpha+\cos \alpha))\) . If one vertex of the square is (10(cos⁡α-sin⁡α),10(sin⁡α+cos⁡α)), where α\(\left(0, \frac{\pi}{2}\right)\) and the equation of one diagonal is \((\cos \alpha-\sin \alpha) x+(\sin \alpha+\cos \alpha) y=10, \text { then } 72\), then 72 sin4α+cos4α+a2-3a+13 is equal to:

119

128

145

155

मान लें कि m1 m2 भुजा a वाले एक वर्ग की दो आसन्न भुजाओं की ढलान है जैसे कि \((10(\cos \alpha-\sin \alpha), 10(\sin \alpha+\cos \alpha))\) यदि वर्ग का एक शीर्ष (10( cos⁡ α - sin⁡ α ),10( sin⁡ α + cos⁡ α )) है जहाँ α ∈ \(\left(0, \frac{\pi}{2}\right)\) है और एक विकर्ण का समीकरण \((\cos \alpha-\sin \alpha) x+(\sin \alpha+\cos \alpha) y=10, \text { then } 72\) है, तो 72 बराबर है: 72 sin 4 α + cos 4 ⁡ α + a 2 - 3 a +13

119

128

145

155

View Answer & Solution
Correct Answer: B (128)
SSC CGL S9 SELECTION  BATCH
Question 4:
Maths

Let Q be the foot of perpendicular drawn from the point P (1, 2, 3) to the plane x + 2y + z = 14. If R is a point on the plane such that ∠PRQ = 60°, then the area of ΔPQR is equal to:

\(\frac{\sqrt{3}}{2}\) 

3

\(\sqrt{3}\)

3

मान लीजिए Q, पॉइंट P (1, 2, 3) से प्लेन x + 2y + z = 14 पर खींचे गए परपेंडिकुलर का पाद है। अगर R प्लेन पर एक पॉइंट है जिससे ∠PRQ = 60° है, तो ΔPQR का एरिया बराबर है:

\(\frac{\sqrt{3}}{2}\) 

3

\(\sqrt{3}\)

3

View Answer & Solution
Correct Answer: B (3)
Question 5:
Maths

Let a,b,c be three coplanar concurrent vectors such that angles between any two of them is same. If the product of their magnitudes is 14 and \((\vec{a} \times \vec{b}) \cdot(\vec{b} \times \vec{c})+(\vec{b} \times \vec{c}) \cdot(\vec{c} \times \vec{a})+(\vec{c} \times \vec{a}) \cdot(\vec{a} \times \vec{b})=168\) then \(|\vec{a}|+|\vec{b}|+|\vec{c}|\) is equal to:

10

14

16

18

मान लीजिए \(\overrightarrow{\mathrm{a}}, \overrightarrow{\mathrm{~b}}, \overrightarrow{\mathrm{c}}\) तीन कोप्लेनर कॉन्करेंट वेक्टर हैं, जिनमें से किन्हीं दो के बीच का एंगल एक जैसा है। अगर उनके मैग्नीट्यूड का प्रोडक्ट 14 है और \((\vec{a} \times \vec{b}) \cdot(\vec{b} \times \vec{c})+(\vec{b} \times \vec{c}) \cdot(\vec{c} \times \vec{a})+(\vec{c} \times \vec{a}) \cdot(\vec{a} \times \vec{b})=168\) है, तो \(|\vec{a}|+|\vec{b}|+|\vec{c}|\) बराबर है:

10

14

16

18

View Answer & Solution
Correct Answer: C (16)
Question 6:
Maths

The domain of the function \(f(x)=\sin ^{-1}\left(\frac{x^2-3 x+2}{x^2+2 x+7}\right)\)

(1,∞)

(-1, 2)

(-1, ∞)

(-∞, 2)

फ़ंक्शन का डोमेन \(f(x)=\sin ^{-1}\left(\frac{x^2-3 x+2}{x^2+2 x+7}\right)\)

(1, ∞)

(-1, 2)

(-1, ∞)

(-∞, 2)

View Answer & Solution
Correct Answer: C ((-1, ∞))
Rajasthan Exams Pass Pro
Question 7:
Maths

Let α, β be the distinct roots of the equation \(x^2-\left(t^2-5 t+6\right) x+1=0, t \in R\) and \(a_n=\alpha^n+\beta^n .\)  Then the minimum value of \(\frac{a_{2023}+a_{2025}}{a_{2024}}\)is:

1/4

–1/4

–1/4

1/2

View Answer & Solution
Correct Answer: C (–1/4)C
Question 8:
Maths

Let a variable line of slope $m>0$ passing through the point $(4,-9)$ intersect the coordinate axes at the points A and B . the minimum value of the sum of the distances of A and B from the origin is

25

30

15

10

View Answer & Solution
Correct Answer: A (25)A
Question 9:
Maths

If (2, 3, 9), (5, 2, 1), (1, λ, 8) and (λ, 2, 3) are coplanar, then the product of all possible values of l is:

21/2

59/8

57/8

95/8

यदि (2, 3, 9), (5, 2, 1), (1, λ, 8) और (λ, 2, 3) समसमतलीय हैं, तो l के सभी संभावित मानों का गुणनफल है:

21/2

59/8

57/8

95/8

View Answer & Solution
Correct Answer: D (95/8)
CET Graduation foundation 2026
Question 10:
Maths

Let y = y (x) be the solution curve of the differential equation \(\frac{d y}{d x}+\left(\frac{2 x^2+11 x+13}{3}\right)\) \(\mathrm{y}=\frac{(\mathrm{x}+3)}{\mathrm{x}+1}, \mathrm{x}>-1,\) which passes through the point (0,1). Then y (1) is equal to:

1/2

3/2

5/2

7/2

मान लीजिए y = y (x) अवकल समीकरण \(\frac{d y}{d x}+\left(\frac{2 x^2+11 x+13}{3}\right)\) \(\mathrm{y}=\frac{(\mathrm{x}+3)}{\mathrm{x}+1}, \mathrm{x}>-1,\) का हल वक्र है, जो बिंदु (0,1) से होकर जाता है। तो y (1) बराबर है:

1/2

3/2

5/2

7/2

View Answer & Solution
Correct Answer: B (3/2)
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