The number of two digit prime numbers which remain prime even inverting the posi

Question

The number of two digit prime numbers which remain prime even inverting the position of its digits is:

Options:

A . 4

B . 5

C . 9

D . 10

Answer: Option C

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Question 10. The HCF and LCM of 24, 82, 162, 203 are :....

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