Question

answer the marked questions by prime prime factorisation method and plz don't give silly answers who will give the correct answer I mark him/her as brinllest​

Answer 1

Answer:

The experiment is done by placing an electrical bell in the bell jar. As the air is pumped out of the sealed bell jar, the sound from the bell jar fades. ... This demonstrates that the sound wave cannot travel through vacuum. That is, a sound wave needs a material medium for its propagation.

Answer 2

Answer:

65=5×13 117=3×3×13 273=3×7×13

Step-by-step explanation: