Question

1 plus 2 plus 2 la puterea a doua plus 2 la puterea 3 plus 2 la puterea a patra plus 2 la puterea a 5-a plus 2 la puterea 6 cu 2 la puterea 7 minus 1

Answer 1

1+2+2^2+2^3+2^4+2^5+2^6+2^7-1=3+4+8+16+32+64+128-1=11+20+160+64-1=191+64-1=255-1=254

Answer 2

1+2+4+8+16+32+64+128-1=254

sper ca te.am ajutat!!!!