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GMAT Club

GMAT Question of the Day (Apr 21): Arithmetic and Sentence Correction

dzyubam 2

Math (PS)

What is the unit's digit of 7^{75}+6?

(A) 1
(B) 3
(C) 5
(D) 7
(E) 9

OA and Explanation

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Verbal (SC)

The fifties, for all their advertised conformity, now appear to have been a time of considerable achievement in the arts.

(A) for all their advertised conformity, now appear to have been
(B) despite all their advertised conformity, now appear to be
(C) for all their advertised conformity, now appear that they were
(D) despite all their advertised conformity, now appears as
(E) with all advertised conformity, now appears

OA and Explanation

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  1. Ashish Ashish

    the exponents of 7 have units digits ending in 7,9,3 and 1 and then series repeat .

    So if 7 exponent 75 ( ie 75/4 = 3) which means we need to 3 units digits and add 6 to it

    Correct answer E

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