Question

3+10×{3+10×[3+10×(3+10×3)-3]-3}-3=

Answer 1

3+10×{3+10×[3+10×(3+10×3)-3]-3}-3=

= 10×{3+10×[3+10×(3+10×3)-3]-3}       (deoarece ultimul 3 se scade din primul 3)

= 10×{3+10×[3+10×(3+30)-3]-3}

= 10×{3+10×[3+10×33-3]-3}

= 10×[3+10×(3+330-3)-3]

= 10×(3+10×330-3)

= 10×(3+3300-3)

= 10×3300

= 33000