If $A = {x : x$ is a prime number between $2$ and $16},$ then number of subsets of $A$ with exactly two elements is

5

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15

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Solution

The correct option is B $10$
$A = {3, 5, 7, 11, 13}$
$\Rightarrow$ required subsets $=^{5} C_{2} = 10$

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If A={x:x is a prime number between 2 and 16}, then number of subsets of A with exactly two elements is

The correct option is B 10A={3,5,7,11,13} ⇒ required subsets = 5C2=10

If $A = {x : x$ is a prime number between $2$ and $16},$ then number of subsets of $A$ with exactly two elements is

The correct option is B $10$
$A = {3, 5, 7, 11, 13}$
$\Rightarrow$ required subsets $=^{5} C_{2} = 10$