Tuesday, 3 July 2012
lets start with maths
MOST OF US DONT KNOW HOW TO USE QUICKER MATHS
SQUARING OF DIGITS HAVING LAST DIGIT 5
15= WRITE 25 OF LAST DIGIT AND MULTIPLY 1 BY 2=225
25=WRITE 25 AS IT IS AND AFTER 2 COMES 3 MULTIPLY 2X3=6, 625 IS YOUR ANSWER
35=3X4=12,LAST DIGIT 25 SO UR ANSWER IS 1225.
75=5625 85=7225. DID U FIND INTERESTING .
SQUARING OF DIGITS HAVING LAST DIGIT 5
15= WRITE 25 OF LAST DIGIT AND MULTIPLY 1 BY 2=225
25=WRITE 25 AS IT IS AND AFTER 2 COMES 3 MULTIPLY 2X3=6, 625 IS YOUR ANSWER
35=3X4=12,LAST DIGIT 25 SO UR ANSWER IS 1225.
75=5625 85=7225. DID U FIND INTERESTING .
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