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Question (21)

QN009009

Find the value of 2x+3 when x=−6.

(A) –15
(B) –12
(C) –9
(D) 9

Correct Answer: C

Explanation:

2(−6)+3=−9

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Question (22)

QN009010

In the growing tile pattern 1,3,5,7,…, the common difference is:

(A) 1
(B) 2
(C) 3
(D) 4

Correct Answer: B

Explanation:

Consecutive terms differ by 2.

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Question (23)

QN009011

The number of tiles at stage n is given by:

(A) n+1
(B) 2n+1
(C) 2n−1
(D) n 2

Correct Answer: C

Explanation:

Pattern follows odd numbers.

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Question (24)

QN009012

How many tiles are present at Stage 15 in the pattern 2n−1?

(A) 27
(B) 28
(C) 29
(D) 31

Correct Answer: C

Explanation:

2(15)−1=29

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Question (25)

QN009013

Which stage contains 47 tiles in the pattern 2n−1?

(A) 22
(B) 23
(C) 24
(D) 25

Correct Answer: C

Explanation:

2n−1=47⇒n=24

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Question (26)

QN009014

Bela has ₹100 and spends ₹5 daily. How much money remains after 15 days?

(A) ₹15
(B) ₹20
(C) ₹25
(D) ₹30

Correct Answer: C

Explanation:

100−5×15=25

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Question (27)

QN009015

After how many days will Bela’s money become zero?

(A) 10
(B) 15
(C) 20
(D) 25

Correct Answer: C

Explanation:

100−5n=0

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Question (28)

QN009016

An auto-rickshaw charges ₹25 for first 2 km and ₹15 per km afterwards. What is the fare for 10 km?

(A) ₹120
(B) ₹135
(C) ₹145
(D) ₹155

Correct Answer: C

Explanation:

25+15(8)=145

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Question (29)

QN009017

For how many kilometres will the auto fare be ₹130?

(A) 8 km
(B) 9 km
(C) 10 km
(D) 11 km

Correct Answer: B

Explanation:

25+15(n−2)=130⇒n=9

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Question (30)

QN009018

A student has ₹500 and receives ₹150 every month. How much money will she have after 4 months?

(A) ₹950
(B) ₹1000
(C) ₹1050
(D) ₹1100

Correct Answer: D

Explanation:

500+150×4=1100

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Question (21)

Find the value of 2x+3 when x=−6.

Explanation:

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Question (22)

In the growing tile pattern 1,3,5,7,…, the common difference is:

Explanation:

Link:

Question (23)

The number of tiles at stage n is given by:

Explanation:

Link:

Question (24)

How many tiles are present at Stage 15 in the pattern 2n−1?

Explanation:

Link:

Question (25)

Which stage contains 47 tiles in the pattern 2n−1?

Explanation:

Link:

Question (26)

Bela has ₹100 and spends ₹5 daily. How much money remains after 15 days?

Explanation:

Link:

Question (27)

After how many days will Bela’s money become zero?

Explanation:

Link:

Question (28)

An auto-rickshaw charges ₹25 for first 2 km and ₹15 per km afterwards. What is the fare for 10 km?

Explanation:

Link:

Question (29)

For how many kilometres will the auto fare be ₹130?

Explanation:

Link:

Question (30)

A student has ₹500 and receives ₹150 every month. How much money will she have after 4 months?

Explanation:

Link:

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