已知12+22+32+…+252=5525,求22+42+62+…+502=_.
问题描述:
已知12+22+32+…+252=5525,求22+42+62+…+502=______.
答
22+42+62+…+502,
=22(12+22+32+…+252),
=4×5525,
=22100.
故答案为:22100.