1as 7*11*13 = 77*13 = 1001
so any 1 digit no a
a*1001=a00a
for two digit number ab
ab*1001 = 1001
ab
b00b
a00a0
= ab00ab
=ab00ab
for three digit number abc
abc*1001 =
1001
abc
c00c
b00b0
a00a00
= abcabc
hence the results
Take a 1,2 or 3 digit no and multiply it by 7*11*13 and see the result...
:)
Ex: 548*7*11*13=?
After seeing the pattern u can just write the answer without calculating..
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5 Answers
1
33Another one...
Take a 2 digit no multiply by....3367
Result can be given in 5 secs how ??
try....
