state number of numbers between;
4^2 and 5^2
15^2 and 16^2
10^2 and 11^2
30^2 and 31^2
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Simply add 4&5 to get the difference between their squares:-
=4+5=9
and then subtract 1 to get the number of numbers between them: -
=9-1=8
And the numbers are 17,18,19,20,21,22,23&24
In the same manner
15+16=31
31-1=30
10+11=21
21-1=20
30+31=61
61-1=60
=4+5=9
and then subtract 1 to get the number of numbers between them: -
=9-1=8
And the numbers are 17,18,19,20,21,22,23&24
In the same manner
15+16=31
31-1=30
10+11=21
21-1=20
30+31=61
61-1=60
sunilsinghani:
thank you so much
And the numbers are 17,18,19,20,21,22,23&24 what are these numbers
All this comes because of the difference between the numbers equal to 1 and a properly a^2-b^2=(a+b)(a-b)=(a+b)1=a+b
4^2=16
5^2=25
So numbers bw them are these which you are asking about
thanks for explaning .....
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