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Mathematics

Grade10

Easy

Question

The constant ratio of the geometric sequence 10.5, 21, 42, 84… is ______.

$\frac{1}{3}$
$\frac{3}{2}$
2
6

hint Hint:

For the given sequence, the constant ratio is $fraction numerator 21 over denominator 10.5 end fraction$

The correct answer is: 2

The given geometric sequence is $fraction numerator 3 over denominator 2 end fraction comma fraction numerator 1 over denominator 2 end fraction comma fraction numerator 1 over denominator 6 end fraction comma fraction numerator 1 over denominator 18 end fraction comma horizontal ellipsis$
For the given sequence, the constant ratio is $fraction numerator 21 over denominator 10.5 end fraction equals 2$

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