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GRE Question of the Day (January 17th)
By Jeff - Jan 17, 02:00 AM Comments [0]
If J = 2 + 4 + 6 + 8 + . . . 98 + 100, and K = 1 + 3 + 5 + 7 + . . . + 97 + 99, then 12−22+32−42+52−62+.....+972−982+992−1002= A) J² - K²B) -50(J² - K²)C) -K - JD) K² - J²E) (-J - K)²
Correct Answer - C - (click and drag your mouse to see the answer)
Question Discussion & Explanation
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