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Math
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Why?
6
How many faces does a cube have?
4
6
8
10
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Why?
6
How many basic trigonometric functions are there?
2
4
6
8
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Why?
6
What is the smallest perfect number?
4
6
8
10
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Why?
Multiplication table
Who published a multiplication table up to 99 Γ 99?
Pythagoras
Nichomachus
John Leslie
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Why?
Multiplication table
What is the oldest known multiplication table?
Babylonian multiplication table
Chinese decimal multiplication table
Greek multiplication table
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Why?
Arithmetic progression
What is the formula for the sum of a finite arithmetic progression?
S_n=n(a_1+a_n)/2
S_n=n(a_1-a_n)/2
S_n=n(a_1+a_n)
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Why?
Arithmetic progression
What is the formula for the n-th term of an arithmetic progression?
an=a1+(n-1)d
an=a1+(n+1)d
an=a1+(n-2)d
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Why?
Arithmetic progression
What is an arithmetic progression?
A sequence of numbers where the difference between any two consecutive terms is random.
A sequence of numbers where the difference between any two consecutive terms is increasing.
A sequence of numbers where the difference between any two consecutive terms is constant.
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Why?
Percentage
What is the correct way to calculate a percentage?
Divide the numeric value of the ratio by 100
Add the numeric value of the ratio to 100
Subtract the numeric value of the ratio from 100
Multiply the numeric value of the ratio by 10
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Why?
Percentage
What is a percentage?
A unit of measurement
A fraction of 10
A fraction of 1000
A fraction of 100
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