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Mathematics 11 Online
OpenStudy (thefluffmuncher):

Choose the counterexample that disproves the conjecture. If a perfect square is odd, then its square root is composite. A. 36 B. 49 C. 81 D. 225

OpenStudy (thefluffmuncher):

it's a think

ganeshie8 (ganeshie8):

36 is not odd, so no. think again

OpenStudy (thefluffmuncher):

b right

ganeshie8 (ganeshie8):

\(\large \sqrt{49} = 7\)

ganeshie8 (ganeshie8):

\(\large 7\) is not composite, so yes B is a good counter example.

OpenStudy (thefluffmuncher):

yay

ganeshie8 (ganeshie8):

good job :)

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