Question: Can I get help with Counterexample. Please explain (i'm confused) 1) Disprove: If a and b are nonnegative integers with a|b, then a

Can I get help with Counterexample. Please explain (i'm confused)

1) Disprove: If a and b are nonnegative integers with a|b, then a<=b.

2) Disprove: If p and q are prime, then p+q is composite.

3) An integer is a palindrome if it reads the same forwards and backwards when expressed in base-10. Disprove: All palindromes with two or more digits are divisible by 11.

Thanks for your help...

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