Question

In a school tree plantation on Independence Day was arranged. every student from I standard will plant 2 trees, II standard students will plant 4 trees each, III standard students will plant 8 trees each etc. If there are 5 standard, how many trees are planted by the student of that school ?

Answer 1

if there is three section in each class than
(3×2)+(3×4)+(3×8)+(3×16)+(3×32)
=6+12+24+48+96
=30+60+96
=90+96
=186(answer)