11² =11X11
without doing actual multiplication we can do it in a simple way.
11² = 11+1, 1² =121
12² =12+2, 2² =144
13² = 13+3, 3² =169
14² = 14+4, 4² =18,16 =196 (carry 1 &add it to18)
15² =15+5, 5² =20,25 =225 (carry 2 & add it to 20)
16² =16+6, 6² =22,36 =256 (carry 3 &add it to 22)
………………………………………………………………
…………………………………………………………………..
No comments:
Post a Comment