1024+512+256+128+64+32+16+8+4+2+1等于多少?要简便运算!
问题描述:
1024+512+256+128+64+32+16+8+4+2+1等于多少?要简便运算!
答
1024+512+256+128+64+32+16+8+4+2+1
=1024+512+256+128+64+32+16+8+4+2+1+1-1
=1024+512+256+128+64+32+16+8+4+2+2-1
=2*1024-1
=2047