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3 years ago

Which of these is a prime number 1,11,21,51 ?

Mathematics

2 answers:

kow [346]3 years ago

8 0

11,,21,51 are all prime numbers

avanturin [10]3 years ago

5 0

A prime number has exactly 2 different factors, 1 and itself.

11 is divisible only by 1 and 11.
11 is prime.

21 and 51 have a least three factors. They are not prime.
1 has only 1 factor. 1 is not prime.

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3 years ago

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luda_lava [24]

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Step-by-step explanation:

Let the angle be y

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Diano4ka-milaya [45]

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zysi [14]

Answer:

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Step-by-step explanation:

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Therefore, we get

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