CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

Sum of numbers 2+22+23+24+25 is 
  1. 62
  2. 64
  3. 60
  4. 66


Solution

The correct option is A 62
Since,   2+22=232
    2+22+23=242
2+22+23+24=252
In general, the sum of the powers 2, 2223 and so on , is equal to 2 subtracted from the next power to the last.
2+22+23+24+25
=262
  =[(2×2×2)×(2×2×2)]2
  =[8×8]2
=642
=62

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
View More...



footer-image