Maths Tricks- Any Number Multiply by 5
N * 5=?
Rules:-
1)N/2
2)Keep quotient (q)
3)Check remainder(r)
if r=1 then add 5 to the end of q
if r=0 then add 0 to the end of q
1) 563786* 5=?
2) 281893
3) Remainder =0 then add 0 end of q
The Result is 2818930
2) 99678537 * 5=?
1) 99678537 /2
2) 49839268
3) remainder=1 then add 1 to End of q
The result is- 498392685
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