A. Arithmetic mean
B. Harmonic mean
C. Geometric mean
D. Weighted median
Answer: B
The average speed for a journey with equal distances at speeds v1 and v2 is the
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In a geometric progression (GP):
A. Difference of consecutive terms is constant
B. Ratio of consecutive terms is constant
C. Sum of first and last term is constant
D. Every third term is equal
Answer: B
In an arithmetic progression (AP):
A. Ratio of consecutive terms is constant
B. Difference of consecutive terms is constant
C. Sum of any two terms is constant
D. Product of consecutive terms is constant
Answer: B
In a right-skewed distribution (tail to the right), typically:
A. Mean < Median < Mode
B. Mean > Median > Mode
C. Mean = Median = Mode
D. Mode > Mean > Median
Answer: B
A weighted average (with all positive weights) of several numbers lies:
A. Below the minimum
B. Above the maximum
C. Always equal to the median
D. Between the minimum and maximum
Answer: D
If the current average of a set is𝐴A and a new value equal to𝐴A is added, the average
A. Increases
B. Decreases
C. Remains the same
D. Becomes 2A
Answer: C
The decimal expansion of a rational number is:
A. Always terminating
B. Always non-terminating, non-repeating
C. Either terminating or non-terminating repeating
D. Always repeating with period 2
Answer: C
Between any two distinct rational numbers, there are:
A. No other rationals
B. Finitely many rationals
C. Infinitely many rationals
D. Exactly one irrational
Answer: C
A prime number is
A. A number with exactly one positive divisor
B. A number with exactly two distinct positive divisors
C. Any odd number
D. Any number not divisible by 2 or 5
Answer: B
The product of any two consecutive integers is:
A. Always odd
B. Always even
C. Always divisible by 3
D. A prime
Answer: B