119^2 - 111^2 is:
(A) Prime number
(B) Composite number
(C) An odd prime number
(D) An odd composite number
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Answer:
B
Step-by-step explanation:
119^2 last digit is 1
also 111^2 last digit is 1
on subtracting you get last digit 0.
so it is composite number only.
hope it helps.let me know
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