ANY NUMBER EASILY MULTIPLY BY 25?
N * 25=?
Rules:-
1) N/4
2)Keep quotient (q)
3)Check remainder(r)
if r=0 then add 00 to end of q
if r=1 then add 25 to end of q
if r=2 then add 50 to end of q
if r=3 then add 75 to end of q
Eg:-
1) 6784*25? 1) 6784/4
2)Q= 1696
3) Check (R)
R=0 then add 00 end of Q
so
Answer is 6784*25 = 169600
2) 98405 * 25?
1)98405/4
2) Q=24601
3) Check R
R=1 then add 25 end Q
So
Answer is 98405*25= 2460125
3) 68546 *25?
1) 68546/4
2) Q= 17136
3)Check R
R=2 then add 50 end of Q
So
Answer is 68546*25=1713650
4) 196587 *25="
1) 196587/4
2)Q= 49146
3) Check R
R=3 then add 75 end of Q
So
Answer is 196587*25= 4914675
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