#13
Class 10
Mathematics
Arithmetic Progressions 2026
Mcq
1M
CBSE
Which of the following sequence is not an A.P. ?
A. $2,\ \dfrac52,\ 3,\ \dfrac72,\ \dots$
B. $-1{\cdot}2,\ -3{\cdot}2,\ -5{\cdot}2,\ -7{\cdot}2,\ \dots$
C. $\sqrt2,\ \sqrt8,\ \sqrt{18},\ \dots$
D. $1^2,\ 3^2,\ 5^2,\ 7^2,\ \dots$
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#19
Class 10
Mathematics
Real Numbers 2026
Mcq
1M
CBSE
The natural number 1 is :
A. a prime number.
B. a composite number.
C. prime as well as composite.
D. neither prime nor composite.
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#20
Class 10
Mathematics
Real Numbers 2026
Mcq
1M
CBSE
The LCM of 960 and 240 is :
A. 960
B. 240
C. 60
D. 15
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